Hand Can Opener Manual Openers - Food-safe Smooth Edge Stainless Steel Tin Can Bottle Openers Heavy Duty Professional Can Openers with Anti Slip Design for Seniors and Arthritic Hands (W18)

This fits well and is very comfortable. I think it would stay down in waves, but it's not so tight that I'm self conscious. It would be even better if it had thumb holes!

Fit fabulously and did an amazing job keeping the sun from burning me in the Caribbean!