For lightning-fast inflation and water protection, the BlockerLite Pump Sack gives you a versatile and lightweight option for gear storage and mattress inflation. Designed with our friends at SealLine, the pump sack features durable and welded seams. Big enough to hold 20-liters of gear, its the perfect size to store extra clothing before inflating a high-volume air pad that features the WingLock or TwinLock valve. Timesaving: Inflates your pad faster than breath inflation. Easily snaps onto Therm-a-Rest valves. SealLine® Protection: Built with ultralight waterproof BlockerLitematerial from our pals at SealLine, this dry sack is extra durable and features welded seams to keep your gear protected. Versatile: Doubles as a lightweight 20-liter dry sack when its time to hit the trail. Weight (Metric): 0.15 kg Width (Metric): 14 cm Length (Metric): 26 cm Height (Metric): 61 cm Packed dimension (Metric): 15 cm x 15 cm x 2.5 xm