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  • Theory Stretch Leggings
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    Theory Stretch Leggings
    Theorys leggings are designed with plenty of stretch, making them a comfortable choice that promises to keep their shape each time you wear them. In pitch black with a second-skin feel, well be wearing them with tunics and oversize sweatshirts - Black stretch fabric, elasticated waist - Slim fit - Try with a longer-length shirt and fitted blazer
  • Theory Leen CK Tank in Spike Knit
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    Theory Leen CK Tank in Spike Knit
    FIT: Racerback tank top with seamless stitch contrast on the back creating a tonal variation. FABRIC: Spike Knit is a unique nylon-spandex blend knitted circularly to create a slimming fit and ultimate flexibility. Hang dry to retain this special fabric’s quick-dry, anti-bacterial and stretchy elements. WEAR IT: To take an early morning hike in the Swiss Alps. 95% Nylon, 5% Spandex. Machine washable.
  • Theory 'Jade L' stretch jersey tank top
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    Theory 'Jade L' stretch jersey tank top
    Theory is embracing the latest trend of athleisure with this skinny-fitting Jade L tank top. Featuring spaghetti straps that criss-cross at the back, this stretch jersey tee is an improved wardrobe essential for your everyday antics.
  • Theory Via CK Pant in Spike Knit
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    Theory Via CK Pant in Spike Knit
    FIT: This high-waisted legging is skinny throughout the legs to maximize movement, with ankle zips for additional comfort. Aside from the inseam, they are completely seamless for flexibility and stretch. FABRIC: Spike Knit is a unique nylon-spandex blend knitted circularly to create a slimming fit and ultimate flexibility. Hang dry to retain this special fabric’s quick-dry, anti-bacterial and stretchy elements. WEAR IT: To explore the museums of London. 95% Nylon, 5% Spandex. Measurement from size p/s. Waist top edge: 26 inches. Inseam: 26 3/4 inches. Zipper length at bottom hem: 7 inches. Machine washable.
  • Pre-owned Women's Theory Grey Pants
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    Pre-owned Women's Theory Grey Pants
    Women's Theory Grey Pants - Size US 2
  • Theory Even Short in Stretch
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    Theory Even Short in Stretch
    FIT: These shorts feature an elastic waistband, discrete side-pockets and an extra pocket on the reverse for easy storage on-the-go. FABRIC: A casual look yet sturdy make. Stretch is technologically advanced, light, durable and water-resistant. WEAR IT: To bike Mount Tamalpais. 80% Polyamide, 20% Polyurethane. Dry clean only. Measurement from size s. Waist along top edge: 29 3/4 inches. Inseam: 2 inches. Machine washable.
  • Pre-owned Women's Theory Grey/Off White/Print Jacket
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    Pre-owned Women's Theory Grey/Off White/Print Jacket
    Women's Theory Grey/Off White/Print Jacket - Size S
  • Theory Allwayz 2 Jacket in Beamed
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    Theory Allwayz 2 Jacket in Beamed
    FIT: This elevated sweat zip-up features contoured lines, a hood and pockets. FABRIC: Moisture-wicking Beamed has a quick-dry finish. Breathable, soft and functional, this fabric is comfortable and performance-enhancing. WEAR IT: For an evening jog, over leggings and a T-shirt. 100% Polyester. Machine washable.
  • Theory Arleena Preen Track Pants
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    Theory Arleena Preen Track Pants
    Pink merino wool blend 'Arleena Preen' track pants from Theory.
  • Theory Via B Pant in Shift
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    Theory Via B Pant in Shift
    FIT: This legging features sleek seams, reverse ankle zips, and an enforced waistband essential for the active wearer. FABRIC: Shift is a medium-weight base layer fabric. This comfortable and stretchy fabric provides gentle compression. WEAR IT: To run a triathlon. 80% Polyester, 20% Spandex. Measurement from size s. Waist top edge: 26 1/4 inches. Inseam 27 5/8 inches. Hem zipper: 7 inches. Machine washable.
  • Pre-owned Theory Womens Pant
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    Pre-owned Theory Womens Pant
    Pants Suits by Theory at Tradesy
  • Theory Pegasis SS Tee in Beamed
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    Theory Pegasis SS Tee in Beamed
    FIT: A fuss-free top with short sleeves and a thick waist-long seam is perfect for a jog or yoga class. FABRIC: Moisture-wicking Beamed has a quick-dry finish. Breathable, soft and functional, this fabric is comfortable and performance-enhancing. WEAR IT: To explore the quiet beauty of the Irish countryside. 100% Polyester. Machine washable.
  • theory Scale Podium Sports Bra
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    theory Scale Podium Sports Bra
    Scoop neck Sleeveless. T-strap back. Contrast color seam. Elasticized hem. Made in USA. Fiber Content: 92% nylon, 8% spandex. Care: Machine wash.
  • Theory Allwayz 2 Jacket in Beamed
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    Theory Allwayz 2 Jacket in Beamed
    FIT: This elevated sweat zip-up features contoured lines, a hood and pockets. FABRIC: Moisture-wicking Beamed has a quick-dry finish. Breathable, soft and functional, this fabric is comfortable and performance-enhancing. WEAR IT: For an evening jog, over leggings and a T-shirt. 100% Polyester. Machine washable.
  • Pre-owned Theory Calvan C Indigo Capris
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    Pre-owned Theory Calvan C Indigo Capris
    Capris by Theory at Tradesy
  • Theory Leen CK Tank in Spike Knit
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    Theory Leen CK Tank in Spike Knit
    FIT: Racerback tank top with seamless stitch contrast on the back creating a tonal variation. FABRIC: Spike Knit is a unique nylon-spandex blend knitted circularly to create a slimming fit and ultimate flexibility. Hang dry to retain this special fabric’s quick-dry, anti-bacterial and stretchy elements. WEAR IT: To take an early morning hike in the Swiss Alps. 95% Nylon, 5% Spandex. Machine washable.
  • Theory Runi S Jacket in Rail
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    Theory Runi S Jacket in Rail
    FIT: This zip-front sweater features a drawstring hood and discrete zip-up pockets. FABRIC: Rail, an active pique fabric, is lightly textured with a silky backside, rendering it slightly stretchy (and perfect for activewear). Hang dry after washing to retain its quick-dry and antibacterial qualities. WEAR IT: To Sunday brunch in the West Village. 95% Polyamide, 5% Elastane. Machine washable.
  • Pre-owned Theory - Stretch Riding Skinny Pants
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    Pre-owned Theory - Stretch Riding Skinny Pants
    Pants by Theory at Tradesy
  • THEORY Arleena stretch-wool jogging bottoms
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    THEORY Arleena stretch-wool jogging bottoms
    Theory stretch-wool jogging bottoms. Slips on. Drawstring elasticated waistband, two slip pockets at front, ribbed trims. 99% wool, 1% elastane. Dry clean. True to size. Size small: Rise 12", inside leg 28", leg opening 8" Model is 6ft and wears a size small.
  • Theory Slim Fit Track Pant
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    Theory Slim Fit Track Pant
    Grey cashmere slim fit track pant from Theory.
  • Theory Pegasis SS Tee in Beamed
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    Theory Pegasis SS Tee in Beamed
    FIT: A fuss-free top with short sleeves and a thick waist-long seam is perfect for a jog or yoga class. FABRIC: Moisture-wicking Beamed has a quick-dry finish. Breathable, soft and functional, this fabric is comfortable and performance-enhancing. WEAR IT: To explore the quiet beauty of the Irish countryside. 100% Polyester. Machine washable.
  • Pre-owned Theory Tecila Law Pant And Matching Jacket
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    Pre-owned Theory Tecila Law Pant And Matching Jacket
    Pants Suits by Theory at Tradesy
  • Theory Pyrite Pant in Shift
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    Theory Pyrite Pant in Shift
    FIT: This legging features sleek seams, reverse ankle zips and an enforced waistband essential for the active wearer. FABRIC: Shift is a medium-weight base layer fabric. This comfortable and stretchy fabric provides gentle compression. WEAR IT: To your yoga class. 80% POLYESTER, 20% SPANDEX. Machine washable.
  • Theory Pegasis SS Tee in Beamed
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    Theory Pegasis SS Tee in Beamed
    FIT: A fuss-free top with short sleeves and a thick waist-long seam is perfect for a jog or yoga class. FABRIC: Moisture-wicking Beamed has a quick-dry finish. Breathable, soft and functional, this fabric is comfortable and performance-enhancing. WEAR IT: To explore the quiet beauty of the Irish countryside. 100% Polyester. Machine washable.
  • Theory Cleannly Pant in Beamed
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    Theory Cleannly Pant in Beamed
    FIT: This legging features sleek seams, reverse ankle zips and an enforced waistband essential for the active wearer. FABRIC: Moisture-wicking Beamed has a quick-dry finish. Breathable, soft and functional, this fabric is comfortable and performance-enhancing. WEAR IT: To a cycling class after work. 100% Polyester. Machine washable.
  • Theory Leen CK Tank in Spike Knit
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    Theory Leen CK Tank in Spike Knit
    FIT: Racerback tank top with seamless stitch contrast on the back creating a tonal variation. FABRIC: Spike Knit is a unique nylon-spandex blend knitted circularly to create a slimming fit and ultimate flexibility. Hang dry to retain this special fabric’s quick-dry, anti-bacterial and stretchy elements. WEAR IT: To take an early morning hike in the Swiss Alps. 95% Nylon, 5% Spandex. Machine washable.
  • THEORY Cashmere jogging bottoms
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    THEORY Cashmere jogging bottoms
    Theory cashmere jogging bottoms. Slips on. Tapered, mid-rise, all-over space-dye pattern, elasticated waistband, ribbed trims. 100% cashmere. Dry clean. True to size. Size small: Rise 10", inside leg 30", leg opening 8" Model is 5ft 10" and wears a size small.
  • Theory Cleannly Pant in Beamed
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    Theory Cleannly Pant in Beamed
    FIT: This legging features sleek seams, reverse ankle zips and an enforced waistband essential for the active wearer. FABRIC: Moisture-wicking Beamed has a quick-dry finish. Breathable, soft and functional, this fabric is comfortable and performance-enhancing. WEAR IT: To a cycling class after work. 100% Polyester. Machine washable.
  • Theory Bruiser W Jacket in Spike Knit
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    Theory Bruiser W Jacket in Spike Knit
    FIT: This ruched jacket features a slimming collar, side pockets and a front-running zipper. FABRIC: Spike Knit is a unique nylon-spandex blend knitted circularly to create a slimming fit and ultimate flexibility. Hang dry to retain this special fabric’s quick-dry, anti-bacterial and stretchy elements. WEAR IT: To traipse through the Uffizi. 95% Nylon, 5% Spandex. Measurement from size p/s. Center back from neck seam: 19 1/2 inches. Sleeve length from center back: 31 5/8 inches. Center front zipper: 20. Machine washable.
  • Theory Bruiser W Jacket in Spike Knit
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    Theory Bruiser W Jacket in Spike Knit
    FIT: This ruched jacket features a slimming collar, side pockets and a front-running zipper. FABRIC: Spike Knit is a unique nylon-spandex blend knitted circularly to create a slimming fit and ultimate flexibility. Hang dry to retain this special fabric’s quick-dry, anti-bacterial and stretchy elements. WEAR IT: To traipse through the Uffizi. 95% Nylon, 5% Spandex. Measurement from size p/s. Center back from neck seam: 19 1/2 inches. Sleeve length from center back: 31 5/8 inches. Center front zipper: 20. Machine washable.
  • Theory Leen CK Tank in Spike Knit
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    Theory Leen CK Tank in Spike Knit
    FIT: Racerback tank top with seamless stitch contrast on the back creating a tonal variation. FABRIC: Spike Knit is a unique nylon-spandex blend knitted circularly to create a slimming fit and ultimate flexibility. Hang dry to retain this special fabric’s quick-dry, anti-bacterial and stretchy elements. WEAR IT: To take an early morning hike in the Swiss Alps. 95% Nylon, 5% Spandex. Machine washable.
  • Theory Cleannly Pant in Beamed
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    Theory Cleannly Pant in Beamed
    FIT: This legging features sleek seams, reverse ankle zips and an enforced waistband essential for the active wearer. FABRIC: Moisture-wicking Beamed has a quick-dry finish. Breathable, soft and functional, this fabric is comfortable and performance-enhancing. WEAR IT: To a cycling class after work. 100% Polyester. Machine washable.
  • Theory Explore S Pant in Rail
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    Theory Explore S Pant in Rail
    FIT: These slim-fitting pants feature an extremely comfortable elastic band along the natural waist and ankle. These leggings feature side-zip pockets and a back-zip pocket for on-the-go storage. FABRIC: Rail, an active pique fabric, is lightly textured with a silky backside, rendering it slightly stretchy (and perfect for active-wear). Hang dry after washing to retain its quick-dry and antibacterial qualities. WEAR IT: To a late afternoon stroll through the French Quarter in New Orleans. 95% Polyamide, 5% Elastane. Measurement from size s. Waist top edge: 25 inches. Inseam: 28 inches. Back pocket zipper length: 5 1/4 inches. Machine washable.
  • THEORY Hillard cashmere jogging bottoms
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    THEORY Hillard cashmere jogging bottoms
    Theory cashmere trousers. Slips on. Slim-fit, tapered, high-rise, elasticated waistband, elasticated cuffs. 100% cashmere. Dry clean. True to size. Size small: Rise 12", inside leg 29", leg opening 10" Model is 5ft 10" and wears a size small.
  • THEORY Hillard striped cashmere jogging bottoms
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    THEORY Hillard striped cashmere jogging bottoms
    Theory cashmere jogging bottoms. Slips on. Slim-fit, tapered, high-rise, elasticated waistband, all-over striped pattern, contrast panels at side, elasticated cuffs. 100% cashmere; 100% wool. Dry clean. True to size. Size small: Rise 12", inside leg 29", leg opening 10" Model is 5ft 10" and wears a size small.
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