BlockerLite™ Pump Sack

Therm-a-Rest BlockerLite Pump Sack – Fast Inflation and Waterproof Gear Storage The Therm-a-Rest BlockerLite Pump Sack is your go-to solution for lightning-fast mattress inflation and reliable water protection. Made with ultralight BlockerLite™ material from SealLine, this durable pump sack features welded seams to keep your gear dry. With a 20-liter capacity, it's perfect for storing extra clothing and inflating high-volume air pads with WingLock or TwinLock valves. TECH SPECS Timesaving: Inflates your pad faster than breath inflation. Easily snaps onto Therm-a-Rest valves. 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).