It stuffs down to a size smaller than a baseball. Its manufacturer, Sea to Summit Inc. of Perth, Australia, suggests using it as a keychain. But unpack the Ultra-Sil Day Pack and its crinkly ...

When I wrote about my hiking and backpacking essentials last summer, one of the first things I put on my list was a dry bag — a waterproof, airtight sack that keeps your belongings from getting wet.

This Sea to Summit backpack is designed to carry and protect your gear in wet and wild conditions. We throw it in the deep end to see how it performs. When it comes to a day in the outdoors where you ...