Hyperlite mountain gear UNBOUND 55L backpack black

Hyperlite Mountain Gear UNBOUND 55L Backpack, Black

HMG Unbound 55—Your Partner for Epic Adventures!

Are you ready to take your outdoor adventures to the next level? Then the HMG Unbound 55 backpack is your perfect companion. This ultimate backpack is designed for the adventurer who refuses to compromise on quality, performance, and comfort.

Lightness with Every Step: With the HMG Unbound 55, you’ll experience a new level of comfort and lightness with every step. It’s crafted with advanced technology and materials that minimize weight without compromising durability. With its 55-liter capacity, it provides enough space to hold all your gear without weighing you down.

Unmatched Durability: The HMG Unbound 55 is built to withstand the most demanding environments. It’s constructed from durable, waterproof materials that keep your gear protected and dry no matter the weather. You can count on it to last through many adventures to come.

Designed for Your Comfort: The backpack features an ergonomic design that conforms to your body shape, providing a comfortable fit throughout your journey. Adjustable straps and padded panels ensure you can carry it with ease, even on long hikes.

Smart Organization: The HMG Unbound 55 features several smart pockets and compartments to organize your gear efficiently. Everything you need is within reach, saving you time and energy when you’re out in nature.

Get Ready for Your Next Adventure: Whether you’re an experienced hiker, an enthusiastic mountaineer, or simply love exploring nature, the HMG Unbound 55 backpack is your best friend for making your next adventure unforgettable.

Invest in quality, comfort, and performance with the HMG Unbound 55—the backpack that takes your adventures to a whole new level. Get ready to explore the world with confidence and style!

Find the right size:
At the base of your neck, you’ll find a vertebra that protrudes more than the others—especially when you tilt your head forward—known as the C7 vertebra. The distance from this vertebra down to the upper line of your iliac crest determines the size of the backpack. The easiest way to find your iliac crest is to place your thumbs against the upper part of your hip bone. You’ll then feel where the hip bone begins. Have a friend or family member measure this, and you’ll get the perfect fit for your backpack.

SPECIFICATIONS & DIMENSIONS

MATERIALS White: DCH50 Main Compartment, DCH150 Lumbar & Bottom Panel, Dyneema Stretch Mesh Front and Bottom Pockets, Hardline with Dyneema Side Pockets | Black: DCH150 Main Compartment, Lumbar & Bottom Panel, Dyneema Stretch Mesh Front and Bottom Pockets, Hardline with Dyneema Side Pockets

INTERNAL VOLUME
55L | 3,400 cu in

EXTERNAL VOLUME
9 L | 549 cu in.

WEIGHT: 975 g *Average weight based on size medium

LOAD CAPACITY
Up to 40 lbs

WIDTH
10" | 25.4 cm

HEIGHT
38" | 96.52 cm

TOP AREA
40" | 101.6 cm

BOTTOM AREA
35" | 88.9 cm

MADE IN MEXICO

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Smart details that make a difference on your hike

The Hyperlite Mountain Gear Unbound 55 is thoughtfully designed down to the smallest detail. With easily accessible pockets, flexible attachment systems, and a removable hip belt, you can customize the backpack to suit both your packing needs and the demands of your hike.

Maximized Storage Space

Every pocket serves a purpose. The spacious side pockets make it easy to reach water bottles without taking off the backpack. The large front pocket, which opens from two sides, provides quick access to rain gear and other equipment. A practical bottom pocket lets you store small items you’ll want to access during your hike.

Flexible and Customizable Packing

The removable compression system with elastic cords and adjustable hooks makes it easy to secure hiking poles, larger water bottles, or other gear to the outside of the backpack. The system can be customized to your needs or removed entirely to save weight.

Removable hip belt for better weight distribution

The padded hip belt provides extra support when your load gets heavier and helps distribute the weight from your shoulders to your hips. With the smooth V-Pull system, you can easily adjust the fit even while hiking. The hip belt is fully removable, allowing you to reduce weight when carrying a lighter load.

Size Guide – Hyperlite Mountain Gear Unbound 55

To choose the right size for your Unbound 55 , it’s your back length—not your height—that matters. The correct size ensures better weight distribution, increased comfort, and keeps the hip belt in the right position.

How to Measure Your Back Length

1. Locate the C7 vertebra: Tilt your head slightly forward and feel for the distinct vertebra at the base of your neck. This is your seventh cervical vertebra (C7) and the starting point for your measurement.
2. Measure along the spine: Ask someone to help you measure with a soft measuring tape from C7 and down along the spine’s natural curve.
3. Find the upper edge of the hip bone: Place your hands on your hips so that they rest on the iliac crests. Let your thumbs point backward toward the spine.
4. Complete the measurement: Measure down to the point where the tape measure crosses an imaginary horizontal line between your thumbs. The distance is your back length.

Size Chart

Size	Back Length
Small (S)	38–43 cm
Medium (M)	43–48 cm
Large (L)	48–53 cm
Tall	53 cm and longer

Between two sizes?
If your back length falls right on the border between two sizes, Hyperlite Mountain Gear recommends choosing the larger size. For example, if your back length is 43 cm, you should choose Medium over Small.

Tip: Feel free to ask someone else to help you measure. It’s easier to get an accurate measurement if you stand relaxed while someone else holds the measuring tape.