RT182738 thickness is 6mm so the quality is very rugged. Widely used to fitting camera.
★Waterproof, shockproof, and dustproof
★Manual pressure equalization valve-balances interior pressure, keeps water out
★Lifetime guarantee of excellence
★O-ring seal
★Open cell core with solid wall design-strong, light weight
★Pre-cut with convoluted lid foam
★Stainless steel hardware