Easy to use. Enough support to be able to slide bottle in and out. Elastic loop holds the bottle in when bending over. Top notch!! Thanks, Zpacks.

– France M., ★★★★★

Water Bottle Sleeves are a great way to keep your water easily accessible while also counter-balancing your backpack. Designed to fit most popular tall slim 1L bottles such as Smart Water, Body Armor, Essentia and similar, these sleeves will attach to the shoulder straps on just about any backpack.

We've teamed up with Glacial Gear to create the ultimate 100% merino wool ultralight trail rag. Made from 180 gsm Hydro-Duct Merino Wool, it's the ideal companion for adventurers who demand both style and substance on the trail. From banishing stubborn dirt and sweat to confidently snatching that sizzling cook pot handle this rag does it all. Throw in merino wool's odor-fighting superpowers and a handy pack loop for easy access, and consider your trailside needs met.

Really glad I bought this pouch—it works with my pack’s waist belt, it’s practically weightless, and it’s the perfect size for phone, compass, map and a few snacks.

– Charles Y., ★★★★★

From the summit to the streets, the versatile Front Utility Pack Accessory provides quick and easy access to all your essentials.

With plenty of space for your phone, a camera, a jacket or snacks, the ultralight F.U.P.A. can be worn as a stand-alone item while bagging a peak or for a night out on the town.

Leave the webbing belt at home and connect the F.U.P.A. directly to one of our backpacks for the ultimate pack accessory.

Really appreciate the ability to carry it different ways and to carry it alone on days in town. Saves much time and aggravation as you can get to most things you need during your hike when carried on your chest.

– Mark B., ★★★★★

This versatile four-in-one backpack accessory is one of our most popular items.  The ability to choose between four different configurations helps make the Multi-Pack the perfect companion for just about any adventure.

Need a spare set of Multi-Pack straps?  Click here.

Check out more of our Backpack Add-Ons.

Had high expectations of this case given Zpacks pedigree but still exceeded easily - crazy light, simple yet super-intelligent design, incredibly easy to use.

– Mathew B., ★★★★★

Our Airplane Travel Case is a useful addition for the jetsetting adventurer looking to blaze international trails. Slide your backpack inside to protect it when checking your backpack on to a plane. When you arrive, move the airplane case to the inside of your backpack and it doubles as a pack liner.

This size will fit typical backpacks up to about 60-70L with all items removed from the exterior pockets. We also have an XL Airplane Case with extra space for items in the exterior pockets or beside your pack.

High quality in construction. Extremely light weight and super durable.

– Wayne S., ★★★★★

This full size roll top dry bag protects the entire internal contents of your backpack. This is a good option if you prefer to use non-waterproof stuff sacks instead of individual dry bags. It is also nice as an extra layer in very wet environments. Multiple sizes are available.

This is also available in a heavier material with a handle for dual-use as a protective Airplane Case for checking your backpack on an airplane.

This item is super. It is very light weight and keeps my pack dry. I am glad I purchased it with my Arc Haul 62L.

– Walter H., ★★★★★

Protect your backpack from pouring rain and muddy ground with our Pack Cover. Our pack cover is an ultralight option to keep your backpack dry, including the outside pockets. It includes an elastic clip to secure it from storm winds.

Consider a Pack Liner as an alternative, if you don't mind your outer pockets getting wet.

This thing was easy to attach and very lightweight. It will help me not lose track of IDs and cash in the bottom of my pack!

– Karen J., ★★★★★

Make sure you don’t lose your most important items. Attach this stick-on key zip pouch to the inside of your backpack, and your keys, wallet, passport, smartphone or other valuables will still be where you left them at the end of your hike. When you get to town the pouch detaches and fits in your pocket.

Just peel off the brown paper backing from the included flat clips and attach the pouch inside your backpack where you want it. We usually stick it towards the top of the backpack right behind the shoulder straps so that it is easy to get to. The adhesive bonds well and will also work on any urethane coated backpack material. Spare Stick on Flat Clips are available if you want to clip this pouch to a second location.