The Sea To Summit carries a full day`s worth of gear in water-resistant safety, then pulls an incredible disappearing act: packing down small enough to hang on your keychain. At just 3. 2 ounces, the Dry Daypack lets you carry food, water, an an extra layer for a day hike, or extra gear for a laid-back canoe trip. Siliconized Cordura, Ultra-Sil nylon, and double-stitched seams are tough enough for serious adventures, while fully taped seams and a Hypalon rolltop design keep water at arm`s length.