There are plenty of completely waterproof first aid kits designed expressly for use on the water, but as they tend to be bulkier, I'm recommending this one for the boat and/or the car — just try ...

Because we spend so much time outdoors, our DIY car first aid kit is heavy on moleskin, blister prevention, and waterproof bandages. We swear by a few herbal remedies that traditional first aid ...

The bag is waterproof, compressible and stocked up ... this portable and lightweight first aid kit is the perfect accessory for accidents. Packed with 220 items, opens quickly when under pressure ...