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Your cart is empty.For lightning-fast inflation and waterproof protection, the Therm-a-Rest BlockerLite Pump Sack is a versatile and lightweight option for gear storage and sleeping pad inflation. Designed in conjunction with SealLine, the pioneer of waterproof packs and dry bags, this pump sack features welded seams for unbeatable waterproofness and durability. Big enough to hold 20 liters of gear, this roll-top dry sack is the perfect size to store extra clothing or a sleeping bag, and can also be used to inflate a Therm-a-Rest high-volume camping air mattress with a WingLock or TwinLock valve, such as the BaseCamp, LuxuryMap, MondoKing, NeoAir Camper, NeoAir Venture, NeoAir XLite, NeoAir XTherm, NeoAir XTherm MAX, ProLite, ProLite Plus, ProLite Apex, Trail Pro, or Trail Scout sleeping pads (not compatible with Therm-a-Rest mattresses equipped with the standard valve). The BlockerLite Pump Sack measures 10 x 5.5 x 24 inches and weighs 5 ounces. Manufacturer’s limited lifetime warranty. Made in the USA.
Chris R.
Reviewed in the United States on September 27, 2024
Description states that it works with Neo Air pad, the fitting does not seal at all, completely different size.
Cee
Reviewed in Canada on April 4, 2024
Kept popping off air valve. Useless.
Riccardo Berg
Reviewed in Germany on April 4, 2024
Der Sack ist nicht größer als der, der den Matten beiliegt. Unterschied ist, dass dieser hier absolut luft- und wasserdicht ist und aufgrund des rollbaren Klickverschlusses als wasserdichter Packsack dient.Das Problem ist aber, dass der Anschluss ein paar Millimeter zu groß geraten ist, so dass er sich nicht wirklich fest an die neuen Ventile anklicken lässt. Sobald man während des Aufpumpens den Sack auch nur ein bisschen zu sehr bewegt, löst sich der Anschluss vom Ventil und man ist sehr schnell frustriert!Da auf vielen Plattformen und vor allem auch in den Bewertungen auf der Thermarest-Seite genau diese Problematik sehr häufig beschrieben wird, scheint es ein grundlegendes Problem zu sein.Der originale graue Packsack passt perfekt auf die Ventile, rastet fest ein und löst sich auch bei wilden Pumpmanövern nicht von der Matte.Also erspart Euch diesen überteuerten Plastiksack und verwendet einfach den originalen Sack, der den Matten beiliegt! Damit klappt es problemlos.Oder nehmt eine dieser kleinen Pumpen. Die sind zwar echt laut, aber erfüllen ihren Job zuverlässig.
Caroline Aumais
Reviewed in Canada on June 4, 2023
J’ai acheté ce sac pompe pour gonfler plus rapidement mon matelas thermarest mais l’air passe à l’embouchure du sac quand je presse le sac et mon matelas ne gonfle pas, c’est plus rapide avec mon souffle 😔 je suis déçus malheureusement. Le sac n’est pas troué , c’est au niveau de l’embouchure, de la connection que l’air passe. Mon matelas est une thermarest Trail scout et je l’aime beaucoup par contre.
JR
Reviewed in Canada on March 15, 2023
While I am a big fan of Therm-a-Rest, SealLine (and their parent company Cascade Designs) for keeping a lot of their manufacturing in North America, this pump sack is not one of those products. Considering this page states "made in the USA" three times, I thought it would be apt to be clear, this sack is made in China. I am often willing to pay a higher price for goods made in the US, so let's not misrepresent things here. See attached photo.Otherwise, it does what it is supposed to do well. I'd say it's worth it if you can pick it up for under $40CDN.
tombo
Reviewed in Japan on November 21, 2023
送風口の剥離が発生。 ２０２１年８月に購入し、車中泊で１０回程度使用。送風口の素材と袋の接着が剥離し、送風するとパンクしました。個体差だとしても、あまりにも情けないかな、、。送風口に残っている接着剤に再度接着し、送風の力を弱めてゆっくりと送風しているが、もう長くは使えないでしょう。接着剤を探して自分で修理できるとは思えないので、再購入するしかないか、と思っています。
tkman
Reviewed in Canada on February 8, 2022
Shipping was prompt. Product arrived in good condition. The bag itself is really thin and not really useful for holding anything. The air filling function did not really work for me. It does not have an adaptor that securely attaches and seals around the thermarest air intake valve. The two stars is for the service and shipping.
Aaron McConnell
Reviewed in Canada on January 16, 2022
Returned the electric pump because it was useless. This is much better although you have to go slow towards the end of it keeps popping off.Three stars because it's easy overpriced for what it is. Should be included with $200 air mat.
W. Miller
Reviewed in the United States on November 5, 2021
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.
Customer
Reviewed in the United Kingdom on October 1, 2021
Great quality pump sack. Just lacking the information needed to let people know that the valve doesn't fit the older mats with the skinnier valve.
ML
Reviewed in Canada on April 21, 2021
This was a good product but it did not fit on our sleeping pad which is not a Therm-a-rest. We thought that could be the case, but we were hopeful Alas, we returned it and are still searching.
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