Thermarest BlockerLite Pump Sack

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, it’s the perfect size to store extra clothing before inflating a high-volume air pad that features the WingLock or TwinLock valve.

Features

• Timesaving: Inflates your pad faster than breath inflation. Easily snaps onto Therm-a-Rest valves.
• SealLine® Protection: Built with ultralight waterproof BlockerLite™ material 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 it’s time to hit the trail.
• Not compatible with Classic Valves (valves on pads pre 2020).