Product descriptionItem Type: WatchbandsModel Number: Sport Band for Watch 7/se/6/5 4 3 2 1 iwatch 44mm/42mm/40mm/38mm/41mm/45mmBand Material Type: SiliconeCondition: New without tagsBand Length: 22cmItem Type: Watchbandscolor: 68colors can be choosedmaterial: sport silicone band For iWatch rubber beltstyle: for iwatch band 7/se/6/5/4/3/2/1Please kindly choose the right size according to your original watch. If you forget that, please kindly refer the below size chart(usually woman could choose a size S/M ) For watch 41mm 40mm 38mm model.1[size]41mm 40mm 38mm S/M -[for (130mm-180mm)2[size]41mm 40mm 38mm M/L - [for (140mm-190mm)3[size]45mm 44mm 42mm S/M - [for ; (150mm-200mm)4[size]45mm 44mm 42mm M/L - [for (160mm-210mm)The iwatch bands made of Soft and Comfortable Silicone material. There are air holes on the band make it more breathable and comfortable, make it does not sweat on the arm when you workout.