Search  for anything...
Therm-a-Rest

Therm-a-Rest BlockerLite Pump Sack for Inflating Sleeping Pads Green

  • Based on 147 reviews
Condition: New
Checking for product changes
$42.09 Why this price?
Save $47.90 was $89.99

Buy Now, Pay Later

As low as $10 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Jul 21
Order within 11 hours and 35 minutes
Available payment plans shown during checkout

Recently Viewed

Features

  • Roll-top dry sack that doubles as a convenient pump sack for inflating a Therm-a-Rest sleeping pad equipped with a WingLock or TwinLock valve
  • Inflate camping air mattresses faster than breath inflation with the BlockerLite Pump Sack; Easily snaps onto Therm-a-Rest WingLock and TwinLock valves (Incompatible with models older than 2020, models equipped with the Standard valve, and non Therm-a-Rest product)
  • Built with ultralight waterproof BlockerLite material from SealLine, this dry sack is extra durable and features welded seams to keep gear protected
  • The versatile pump sack can be used as a lightweight 20-liter dry sack when its time to hit the trail. Top fabric type: 20D Rip Nylon
  • Measures 10 x 5.5 x 24 inches and weighs 5 ounces; made in the USA

Size: Pump Sack


Special Feature: Lightweight


Brand: Therm-a-Rest


Color: Green


Product Dimensions: 10"L x 24"W x 5.5"Th


Specific Uses For Product: Sleeping


Included Components: sleeping pad pump sack


Target Audience: Adult


Model Name: BlockerLite Pump Sack


Capacity: 20 Liters


Size: ‎Pump Sack


Special Feature: ‎Lightweight


Brand: ‎Therm-a-Rest


Color: ‎Green


Product Dimensions: ‎10"L x 24"W x 5.5"Th


Specific Uses For Product: ‎Sleeping


Included Components: ‎sleeping pad pump sack


Target Audience: ‎Adult


Model Name: ‎BlockerLite Pump Sack


Capacity: ‎20 Liters


Product Care Instructions: ‎Hand Wash Only


Number of Items: ‎1


Item Firmness Description: ‎Plush


Water Resistance Level: ‎Waterproof


Item Package Dimensions L x W x H: ‎9.65 x 3.27 x 1.14 inches


Package Weight: ‎0.09 Kilograms


Item Dimensions LxWxH: ‎10 x 24 x 5.5 inches


Brand Name: ‎Therm-a-Rest


Warranty Description: ‎Limited lifetime manufacturer.


Suggested Users: ‎Unisex-Adult


Manufacturer: ‎Cascade Designs Inc.


Part Number: ‎13228


Model Year: ‎2020


Date First Available: December 13, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Jul 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Nice waterproof alternative to the included air sack
I'm a long time backpacker, but a recent convert to the therm-a-rest pad (not sure why I resisted so long). The blow up sack that is included with all current therm-a-rest air pads is great, but I found myself missing the multi-functionality I had with my previous Big Agnes pumphouse sack (pump sack and waterproof bag for my sleeping bag, rolled into one). This product answers that need. I filled up the sack in my sink with water to check it out, and it didn't loose a drop. Compare that to the default pump sack, which lets water pass through easily (and yes, it's not marketed as a dry sack). And this sack actually comes in at the same weight as the original. Albeit, they accomplished this by reducing it's overall size. More on that later. Although the Blockerlite does what it says it does, there are a couple of downsides in comparison to the default thermarest pump sack. First, it's smaller than the standard; this means not only can you not fit as much inside of it (this is actually a partial plus for me, as my sleeping bag doesn't take up a lot of room), but you can't get as much air into it to blow up your pad. It's not half as small, but it probably takes twice as long to use as a pump sack because of its size. I still love it, but you'll be disappointed in comparison. Second, the fit on the plug-in gasket isn't quite as good as the original. The poorer seal, combined with the sack's more diminutive size, means that you'll be losing connection a lot more than you did with the original bag. This is the only thing I really don't like about this sack. But I'm stoked this product exists. I like to serve double purpose on as many of my backpacking items as possible, and the blockerlite lets me do that, albeit with a little more effort. ... show more
Reviewed in the United States on November 5, 2021 by W. Miller
    • Ripped after a few days use
I have been a happy customer of ThermaRest for nearly 20 years now. This product does not meet their standards. It's a piece of junk, to be frank. It ripped apart after a few days of use. It did not stay attached to the pump valve. I stopped using it for inflation even before it ripped apart because it was such a hassle to use. The pump sack that came with my NeoAir does not have the same problem, so why should this? I have used other waterproof pumpsacks from competing companies. Stay away from this product. ... show more
Reviewed in the United States on October 23, 2021 by Amazon Customer
    • Helpful, not miraculous.
Not easy to use effectively but will get the job done. Not a big time saver but definitely saves your breath.
Reviewed in the United States on January 11, 2021 by Teelow22
    • So easy
Works well, fills my pad in about eight pumps for a nice firm feel.
Reviewed in the United States on April 22, 2022 by MARK
    • No added value
It’s not well fitted with my trail lite. If it’s threaded it might. Everytime i put air in, it’s disconnected. I gave 2 stars because it’s veey lightweigh as a drysack.
Reviewed in the United States on June 3, 2021 by Jan Man
    • Lightweight pump-sack/dry-bag
Solid pump-sack/dry-bag for inflating my new WingLock XLite sleeping pad. Doubles as a dry-bag for my EE Revelation quilt. Minimum weight is 2.68oz (76g).
Reviewed in the United States on March 14, 2020 by Dan
    • Not for Xlites
Good product, unfortunately didn't fit my NeoAir Xlite. But It's the best compression suck I ever had.
Reviewed in the United States on June 16, 2020 by Dmitrii
    • Don’t waste your money.
You can blow up your mattress faster than using this product.
Reviewed in the United States on August 13, 2020 by susan hawthorne

Can't find a product?

Find it on Amazon first, then paste the link below.