100% non-allergenic silicone rubber, reusable, durable, washable, stretchable, comfortable, snug-fit, and easy to apply and remove.It is a precision molded "transitional tool "which offers the ultimate solution for sore fingers experienced when learning to play guitar, (also great for those who may play infrequently).Fingertip protectors/guards, allow for PAINLESS play. You can play or practice longer while your fingers continue to toughen.A great "transitional tool" for beginners which still allows for "GRADUAL" Callus development. Works equally well for other stringed instruments, banjo, mandolin, ukulele.Item type: fingertip protectorMaterial: siliconeColor: TransparentSize: S:14*18*25mmQuantity: 4pcsSuitable for: guitar, banjo, mandolin, ukulele and etcPackage includes: 4 x fingertip protectorsNote: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.