... Yes ISO9001+ISO14001 fashion energy silicone negative ion sports magnetic watch 1.Material: pure silicone,softness,excellent abrasion ... proof,unbreakable easy to keep its shape. 2) Soft, flexible,excellent abrasion resistance. 3) Elastic design for comfortable feel3 ... proof,unbreakable easy to keep its shape. 2) Soft, flexible,excellent abrasion resistance. 3) Elastic design for comfortable feel3 ...