Neck-strap is adjustable with black slider. 100% cotton. Hand wash, Lay flat to dry, Iron as needed. Bow-tie Size: (Varies with age) Width - 3.5 - 4.5" Height - 2 - 2.5" Strap Width - 3/4" Strap Length - Choose at checkout *More Sizes Available - Please contact us with neck size. *Approx Sizes 0-6 months - Strap size: 10" 6-12 months - Strap size: 11" 12-18 months - Strap size 12" 2-3 years - Strap size: 13" 4-5 years - Strap size: 14" 6-10 years - Strap size: 15" (All babies are unique in their own way, For best fit