Therm-A-Rest BlockerLite Pump Sack



The Therm-A-Rest BlockerLite™ Pump Sack is a versatile sack for inflating your pad or protecting your gear.

Providing lightning-fast inflation and water protection, the BlockerLite Pump Sack gives you both a versatile and lightweight option for gear storage and mattress inflation.
Designed in partnership with SealLine, the pump sack features durable and welded seams. Capable and large enough to hold 20-liters of gear, it’s perfectly sized to store extra clothing before inflating your Therm-A-Rest 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 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.


  • Colour: Green
  • Size: 20L
  • Weight: 5 oz / 0.15kg
  • Dimensions: 5.5 x 10 x 24 in / 14 x 26 x 61 cm
  • Packed Dimensions: 6 in x 6 in x 1 in / 15 cm x 15 cm x 2.5 cm
  • Top Fabric Type: 20D Rip Nylon
  • Material(s): Polyester

    Base Camp Food are proud to be an official Therm-A-Rest UK retailer. To view the full range of Therm-A-Rest products, click here.

    Free UK Delivery on all Therm-A-Rest Sleeping Bags, Sleeping Pads, Pillows and accessories.

    Nalgene water bottle pictured is used as a size reference. Water bottle sold separately.

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