--- title: "Hyperlite Mountain Gear Unbound 40 (2026)" name: "Hyperlite Mountain Gear Unbound 40 (2026)" brand: "Hyperlite Mountain Gear" description: "A thoughtfully designed backpack from the workshop of the legendary American brand Hyperlite Mountain Gear, built specifically for long-distance trails." handle: "hyperlite-mountain-gear-unbound-40-2026" sku: "3-40840-4" ean: "732388391882" gtin: "732388391882" canonical_url: "https://gramino.com/p/hyperlite-mountain-gear-unbound-40-2026" html_url: "/p/hyperlite-mountain-gear-unbound-40-2026" md_url: "/p/hyperlite-mountain-gear-unbound-40-2026.md" locale: "en" market: "eu" currency: "EUR" price: 422.1 price_formatted: "€422.10" availability: "InStock" item_condition: "NewCondition" category: "Backpacks" category_path: "/c/backpacks" breadcrumbs: - name: "Home" url: "/" - name: "Backpacks" url: "/c/backpacks" - name: "Hyperlite Mountain Gear Unbound 40 (2026)" url: "/p/hyperlite-mountain-gear-unbound-40-2026" last_updated: "2026-10-13" --- # Hyperlite Mountain Gear Unbound 40 (2026) Brand: Hyperlite Mountain Gear · Category: [Backpacks](/c/backpacks.md) Backpack size: Medium, Large, Small, Tall · Removable hipbelt: Yes · Seam-sealed: Yes ## Offer - Price: €422.10 - Availability: In stock - Condition: New - Buy on the website: [HTML product page](/p/hyperlite-mountain-gear-unbound-40-2026) ## Description A thoughtfully designed backpack from the workshop of the legendary American brand Hyperlite Mountain Gear, built specifically for long-distance trails. Thanks to the Dyneema® Woven Composite 3.9 material, the new version is lighter and more durable than ever, with improved support and a completely reworked, cleaner design. The roll-top closure and fully removable compression system let you adjust the volume for anything from a weekend trip to the most demanding long-distance trails. ## What makes this product special? An upgraded version of the ultralight, rugged backpack for true ultralight and thru-hiking enthusiasts. Dyneema® Woven Composite 3.9 material, 40-liter volume, load capacity up to 18.1 kg, two removable aluminum stays, removable hip belt, fully removable compression system, roll-top closure with vertical compression straps, sizes Small to Tall, white or black. ## A backpack for long-distance trails There's no better way to **put a backpack's design to the real test than to send it on a thru-hike**. Over more than 3 000 kilometers and an average of five to six months, day after day, loaded, shaken, dragged, and exposed to the elements – that's where the truth comes out. HMG set out to build a backpack for exactly these expeditions, and the Unbound 40 is the result. Every carefully considered feature had to earn its place, leaving only what's essential for **an efficient, comfortable, adaptable, and reliable backpack**. Long-distance trails are tough, so let the Unbound 40 carry some of that weight for you. The 40-liter volume **is ideal for 2–5 day resupply windows with a more dialed-in kit**. Thanks to the roll-top closure, removable hip belt, and internal stays, the Unbound 40 also works well **for single-day mountain climbs**. [Video](https://www.youtube.com/watch?v=2vM-VYPnDxs) ## Differences from the previous version In 2026, HMG introduces several major changes based on thousands of kilometers of field experience: - **Material change** – the new Dyneema Woven Composite 3.9 material offers higher abrasion resistance at nearly the same weight, and feels nicer to the touch. - **Improved support** – two new shaped, removable aluminum stays, wider and more naturally contoured shoulder straps with more sternum strap positions. - **Simplified construction** – internally taped seams with no need for external binding, a new low-profile sewn-in daisy chain. - **Compression system** – now fully removable and adjustable, so you can easily attach trekking poles or bulky bottles; elastic retainers in the side pockets hold tall items in place. - **Dimensions** – a wider back panel (26.7 cm instead of 25.4 cm) and a larger pack circumference while keeping the same height. - **Other changes** – a fabric loop for attaching an ice axe; two internal grommets for an optional zippered pocket; smaller cosmetic tweaks (a smaller logo, new zipper pulls, etc.). ## Specifications - **Top closure**: a roll-top system with vertical compression straps and a top Y-compression strap. - **Back panel**: an integrated foam panel holds its shape and keeps the carry comfortable. - **Stays**: two removable, shaped aluminum stays distribute the load and can be taken out to save weight. - **Hip belt**: removable, with improved padding and the ability to fine-tune how the pack sits. - **Shoulder straps**: reshaped with a more natural curve around the neck, with more sternum strap adjustment positions. - **Front pocket**: accessible from both sides, made from stretchy Dyneema® Stretch Mesh. - **Side pockets**: large, easy to reach even while walking, with a removable elastic retainer for tall items. - **Bottom pocket**: quick access to small items or a rain jacket; it can also double as trash storage. - **Compression straps**: fully removable and adjustable side straps and top Y-strap. - **Daisy chains**: low-profile vertical and horizontal loops, sewn directly into the construction. - **Seam taping**: internally taped seams with no external binding – a cleaner look, still reliable water resistance. - **Accessory options** – compatible, for example, with [Shoulder Pocket](/p/hyperlite-mountain-gear-shoulder-pocket), [Bottle Pocket](/p/hyperlite-mountain-gear-bottle-pocket), [Versa](/p/hyperlite-mountain-gear-versa), [Pods](/p/hyperlite-mountain-gear-pods), and an internal loop for attaching an [additional pocket](/p/hyperlite-mountain-gear-inside-pack-pocket). ## Technical parameters - **Weight**: 774 g (size M) - **Internal volume**: 40 liters - **External volume**: 9 liters - **Load capacity**: up to 18.1 kg - **Back panel width**: 26.7 cm - **Height fully unrolled**: 82.6 cm - **Upper pack circumference**: 92.7 cm - **Lower pack circumference**: 92.7 cm These figures are for size Medium. ## Materials The main body of the pack is made from the new [**Dyneema® Woven Composite 3.9**](/blog/dyneema-woven-composite-hyperlite-mountain-gear) material, which combines **low** **weight**, **high** **strength**, and **top-tier** **resistance** **to abrasion**. Thanks to its fully woven outer layer of Dyneema® fibers, the material is exceptionally strong and durable, feels nicer to the touch, holds its shape better, and doesn't make unpleasant noise even in cold weather. The material itself is **100% water-resistant**, but the stitching can create small holes. Even though more than 90% of the pack's seams are taped, it can't be called 100% waterproof. For complete protection against water and moisture, we recommend pairing the pack with [waterproof dry bags](/c/gear/drybags-and-organisers). The side pockets and hip belt pockets are made from tough, durable **100D Dyneema® Gridstop** material that holds up even in demanding terrain. The large front pocket is made from stretchy **Dyneema® Stretch Mesh**. ## How to choose the right size? The pack size is determined by torso length: - **Small**: 38–43 cm - **Medium**: 43–48 cm - **Large**: 48–53 cm - **Tall**: more than 53 cm **If you're not sure which size to choose, feel free to contact us. We're happy to help.** [Video](https://youtu.be/zn7qnbXNz0M?si=2gQ3XLba13e3oA7l) ## Specs - Color: White, Black - Backpack size: Medium, Large, Small, Tall - Removable hipbelt: Yes - Seam-sealed: Yes - Waterproof material: Yes - Backpack frame: Aluminum frame - Backpack padding: Yes - Backpack removable frame: Yes - Maximum load capacity: 18.1 kg - Sex: unisex - Material: Dyneema stretch mesh, DCH50, Hardline with Dyneema, DCH150 - Material composition: Polyester, Nylon, Ultra High Molecular Weight Polyethylene (UHMWPE) - Volume: 49 l - External volume: 9 l - Internal volume: 40 l - Weight: 774 g - Woocommerce product id: 198328 - Brand: Hyperlite Mountain Gear ## Variants - Hyperlite Mountain Gear Unbound 40 (2026) - Tall, White · SKU 3-40840-4 · EAN 732388391882 · €422.10 · In stock · White, Tall - Hyperlite Mountain Gear Unbound 40 (2026) - Medium, Black · SKU 3-50840-2 · EAN 732388392087 · €422.10 · Out of stock · Medium, Black - Hyperlite Mountain Gear Unbound 40 (2026) - Large, Black · SKU 3-50840-3 · EAN 732388392186 · €422.10 · Out of stock · Black, Large - Hyperlite Mountain Gear Unbound 40 (2026) - Tall, Black · SKU 3-50840-4 · EAN 732388392285 · €422.10 · In stock · Black, Tall - Hyperlite Mountain Gear Unbound 40 (2026) - Small, White · SKU 3-40840-1 · EAN 732388391585 · €422.10 · In stock · Small, White - Hyperlite Mountain Gear Unbound 40 (2026) - Large, White · SKU 3-40840-3 · EAN 732388391783 · €422.10 · In stock · Large, White - Hyperlite Mountain Gear Unbound 40 (2026) - Medium, White · SKU 3-40840-2 · EAN 732388391684 · €422.10 · Out of stock · Medium, White - Hyperlite Mountain Gear Unbound 40 (2026) - Small, Black · SKU 3-50840-1 · EAN 732388391981 · €422.10 · In stock · Black, Small ## Related - [Hyperlite Mountain Gear Unbound 55 (2026)](/p/hyperlite-mountain-gear-unbound-55-2026.md) - [Hyperlite Mountain Gear Camera Pod](/p/hyperlite-mountain-gear-camera-pod.md) - [Hyperlite Mountain Gear Windrider 40](/p/hyperlite-mountain-gear-windrider-40l.md) - [Hyperlite Mountain Gear Bottle Pocket](/p/hyperlite-mountain-gear-bottle-pocket.md) - [Hyperlite Mountain Gear Pack Accessory Straps](/p/hyperlite-mountain-gear-pack-accessory-straps.md) - [Hyperlite Mountain Gear Junction 55 (2025)](/p/hyperlite-mountain-gear-junction-55.md) - [Hyperlite Mountain Gear Shoulder Pocket](/p/hyperlite-mountain-gear-shoulder-pocket.md) - [Hyperlite Mountain Gear Southwest 55 (2025)](/p/hyperlite-mountain-gear-southwest-55.md) ## Shipping and returns - [Shipping and payment](/shipping-payment) - [Returns](/return-order) ## Images - ![Hyperlite Mountain Gear Unbound 40 (2026)](https://media.gramino.com/medusa/hyperlite-mountain-gear-packs-unbound-40-white-01-01M4RV36WAWMFXR3NSVJ9MB6VT.jpg) - ![Hyperlite Mountain Gear Unbound 40 (2026)](https://media.gramino.com/medusa/hyperlite-mountain-gear-unbound-40-2026-white-02-01M22KB6ZAC6J1EMZ954FZ6RAF.webp) - ![Hyperlite Mountain Gear Unbound 40 (2026)](https://media.gramino.com/medusa/hyperlite-mountain-gear-unbound-40-2026-white-03-01M22KB771VV9EPN6E2K8R8A8R.webp) - ![Hyperlite Mountain Gear Unbound 40 (2026)](https://media.gramino.com/medusa/hyperlite-mountain-gear-unbound-40-2026-white-04-01M22KB7FNPBY8SR5PKS3574NA.webp) - ![Hyperlite Mountain Gear Unbound 40 (2026)](https://media.gramino.com/medusa/hyperlite-mountain-gear-unbound-40-2026-white-05-01M22KB7Q1YJQPCB7GAM73NG1N.webp) - ![Hyperlite Mountain Gear Unbound 40 (2026)](https://media.gramino.com/medusa/hyperlite-mountain-gear-packs-unbound-40-black-01-01M4RV36WB24E80AR828JTAW10.jpg) - ![Hyperlite Mountain Gear Unbound 40 (2026)](https://media.gramino.com/medusa/hyperlite-mountain-gear-unbound-40-2026-black-02-01M22KB8EZM6VC8QM4XQ0CGSR7.webp) - ![Hyperlite Mountain Gear Unbound 40 (2026)](https://media.gramino.com/medusa/hyperlite-mountain-gear-unbound-40-2026-black-03-01M22KB8QPJ4A5VQQE5Q1D3P10.webp) ## Identifiers - SKU: 3-40840-4 - EAN: 732388391882 - Handle: hyperlite-mountain-gear-unbound-40-2026 - Brand: Hyperlite Mountain Gear This product is also available as [HTML](/p/hyperlite-mountain-gear-unbound-40-2026). 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