Non-slip footwear for beaching or outdoor recommendation

Hello, any recommendations for a non-slip footwear?

I recently had an accident (nadulas sa pool) that caused a major surgery of my right forearm kaya maingat na ako this time sa mga footwear na gagamitin ko para iwas na madulas.

I have a travel this coming September sa Siquijor and i need a 1 footwear for all. Outdoor and beaching.

Any recommendations?