REI’s 16-ounce Nalgene water bottle is perfect for short day hikes to and from your campsite. Since it only holds 2 cups of water, it won’t add a noticeable amount of weight to a day pack. Its small ...

Best Collapsible Water Bottles The best collapsible water bottles work exactly like you imagine: They crush, fold, or simply roll down into an ultra-portable size when you don’t need them (like, say, ...