Hyperlite Mountain Gear

Unbound 40L


The Hyperlite Unbound (40L) is the ultimate backpack for those who demand durability, functionality, and ultralight design in one package.

This backpack is made from Dyneema Fabric, which is known for its incredible strength-to-weight ratio, making it virtually indestructible in harsh conditions. With a capacity of 40 litres, the Unbound backpack is perfect for lengthy thru-hikes to weekend trips, and its minimalist design allows you to carry everything you need without any unnecessary bulk.

The roll-top closure and side and top compression straps keep your gear secure and compact, while the removable hip belt adds extra stability and support. The Unbound backpack features a spacious main compartment with a front stretch pocket and side water bottle holders, providing quick access to your essential items, such as snacks, maps, and navigation tools. It's the perfect backpack for hikers who demand a backpack that can handle anything and everything.

The Hyperlite Mountain Gear Unbound (40L) is an excellent investment for anyone who wants a backpack that is tough enough to take on any adventure yet lightweight and functional to make your journey as comfortable and enjoyable as possible.


  • roll-top closure system with removable side compression straps for customisable compression
  • removable hipbelt featuring zippered pockets, more cushion, and additional daisy chains for modularity. Built using Hardline with Dyneema, dual-density 1/8" closed cell rigid foam, 1/4" closed cell foam, and spacer mesh
  • integrated plastic sheet with 1/4" high-density foam back panel pad
  • grab loop
  • removable vertical compression straps
  • top Y-strap compression - Designed to secure gear
  • Shoulder Straps: Hardline with Dyneema shoulder straps with 3/8" closed cell foam and spacer mesh
  • sternum strap allows for easy adjustments along shoulder strap daisy chains
  • buckles/bungees: New 5/8" hardware minimises weight without sacrificing durability
  • one removable, contoured aluminium stay
  • seam tape on all vertical side seams and behind all sewn-on pack features
  • pack accessories options: Shoulder Pocket, Versa, Stuff Sacks, and Pods
  • four 1/4" vertical daisy chains for attaching extra gear for trip-specific customisation, in addition to a horizontal daisy chain below dual-entry front pocket
  • large dual-entry front pocket provides significant storage as well as streamlined access to smaller items (i.e. tent stakes). Made from durable Dyneema Stretch Mesh
  • oversized side pockets for streamlined access to water bottles and other gear on the go
  • bottom pocket features durable Dyneema Stretch Mesh, ideal for easy access to snacks or a quick place to store your rain jacket
  • load capacity up to 18.1kg
  • weighs: 853g


Fits Torso Length 
M: 17 - 19 inches
L: 19 - 21 inches
Tall: 22+ inches

Fits Waist/Hips
M: 27.5 - 50 inches
L: 29.5 - 52 inches
Tall: 29.5 - 52 inches

Pack dimensions

  • back width: 25.4cm
  • height: 82.6cm
  • top circumference 88.9cm
  • bottom circumference: 88.9cm
Shipping Information

Our on-line store is open 24/7 and we ship Monday through Friday, excluding some holidays. Orders received for products without shipping restrictions on its product page will ship the same business day when received before 12:00 p.m. PST. Orders in high demand will have an estimated production time listed on its product page and will ship according to the date listed.

About Us

Who we are

"Established in 1968 as Southern Cross Equipment, we are now a member of a retail company called The Outdoor Life Group. Private ownership provides us with the freedom to choose our own business path. We have therefore developed a retailing concept that excites us, and which we hope will inspire you.

Trek & Travel combines the best outdoor products from around the world with very experienced staff who all share a passion for travel and adventure. This passion for the wilderness, cultures and heritage of the planet keeps us actively seeking new places to explore.

We hope that you find us both welcoming and knowledgeable, and always willing to help you plan your next adventure."



"I spent close to 3 hours in this store today, being fitted for and choosing a pack, and the staff are fantastic. Helpful, knowledgeable, patient and friendly - and I think I'm probably a fussy customer and I have difficulty finding packs that fit comfortably. Has to be my best experience in this kind of store to date."
Amanda Warriner - 5★ 

"My favourite outdoor shop in Sydney. This is where you go if you want to see gear stocked because of it's quality, not just because it's corporate overload has pumped out another 10,000 puffer jackets that need to be moved before next season. Knowledgeable staff that actually partake in trekking and travelling themselves. Definitely worth dropping in!"
Tom Brickhill - 5★

"Always friendly, helpful staff with great knowledge. Great range of good quality products (nothing really low end) including Australian/NZ brands e.g. Wilderness Equipment, One Planet and Aarn. Never had a fuss with exchanging unused gear within the 2 week period."
Adam Jude Baus - 5★ 

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