QuiksilverCarver Suede Flip Flops for Men, Arch Support Athletic Mens Sandals, Size 6 to 16 Thong Mens Slides

Do these float?

Can these be considered sort of waterproof? Like just to wear for a communal shower a couple of times.

are they WIDE?

my husband has an old pair of these but we don't remember which size he is wearing. Can someone tell me what the size 11 or 12 measure end to end?