I used this bag for snorkeling once and it didn't let the water through. I was disappointed in purchasing the case because I didn't see the inside size specs for any of the polaroid waterproof cases. This case has internal dimensions of 9.9cm x 6.4cm x 2.0cm and is designed to work with fixed lenses that do not protrude from the camera body. I used this housing with a Panasonic TS20 (which is waterproof itself but wanted to be sure) and the width was narrow but the camera fit inside.
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