One pair per pack. The vast majority of our customers experience no discomfort when wearing our hold ups, however if you do suffer discomfort or have any form of adverse reaction you should stop wearing them. To ensure the performance of this product is not affected, we advise you not to use talcum powder, body lotion or fabric conditioner with these hold-ups. John Lewis hold-ups size guide: S/M = 5'2" - 5'6" (157-167cm) M/L = 5'7" - 6'0" (170-183cm) Brand : John Lewis. Denier : 30. Hosiery Finish : Gloss. Hosiery Type : Hold-Ups. Material : 81% nylon, 19% lycra elastane. Size : M. Washing Instructions : Hand wash.