These 3mm neoprene cuffs from Grundens are made to seal up the area between you jacket and gloves. The stretch characteristics of the neoprene provide for a snug fit. The large size (200L) have a 10″ length, a forearm circumference of 10.5″ and a 8″ wrist circumference. The medium size (200M) have a 9.5″ length, a forearm circumference of 10″ and a 7″ wrist circumference. Note these measurements are for general information and were taken when the items were un-stretched. 1 Pair- 2 cuffs.