... buckle. 3.Material:PP+TPR/TPR+POE / Silicone. Item nameSwimming Diving Set MaterialMaskLens: Tempered Glass , PC , PS.Frame: ABS,PCStrap:PVC ... :34-38 -M:39-43 -L:44-48ApplicationSuitable for diving, swimming and surfing.PackagingPVC bag or Net bag.Other feature1 ... stability & less resistance3. Quick release, quick-adjust buckle Diving Set for Swimming, Surfing or Diving, Low Price, Well Packing