How do I measure my torso length for sizing?

Measure from the top of your hipbone (where the hip belt should sit) to the prominent bone at the base of your neck (C7 vertebra). This measurement determines which torso length you need so the shoulder straps and hip belt align correctly. If you fall between sizes, consider how you prefer weight distribution—smaller sizes ride slightly higher, larger sizes slightly lower.

Can I use this pack in wet conditions without a rain cover?

Yes. The woven Dyneema fabric is fully waterproof and won't allow moisture to penetrate, so you don't need a separate rain cover. The rolltop closure keeps water from entering through the top when properly rolled. Just make sure to close the top securely and keep the solid-fabric side pockets zipped if rain is heavy.

What's the difference between the 40L and 55L versions?

The 40L version suits trips where you resupply every two to four days or carry minimal gear. The 55L option gives you room for longer stretches between resupply points or bulkier items like bear canisters, winter layers, or cooking equipment. Both use the same materials and pocket configuration.

Does a frameless pack work if I'm carrying heavier loads?

Frameless packs perform best with loads under about 25 to 30 pounds, depending on your experience and how you pack. They require you to arrange gear thoughtfully so weight sits close to your back and distributes evenly. If you regularly carry more weight or prefer not to think about load management, a framed pack will be more comfortable.

How do I clean this pack?

Wipe the Dyneema fabric with a damp cloth and mild soap when needed. The material doesn't absorb water, so it dries quickly and won't hold odors the way fabric packs can. Avoid machine washing, which can stress seams and zippers over time. For stubborn dirt, use a soft brush and rinse with clean water.

Junction

waterproof

The 3-second version

Main body built from fully woven Dyneema for waterproof protection
Frameless design with sewn-through shoulder straps for direct weight transfer
Rolltop closure adjusts volume as your load changes
Frameless design requires load management skill
Four torso sizes mean you must measure carefully
Woven fabric shows scuffs more than textured materials

Why it's on GiftsFeed

Waterproof backpack built from woven Dyneema for serious trail miles

Most waterproof backpacks use a coated fabric with a separate rain cover, which means pulling out the cover when weather turns, stuffing it back when skies clear, and dealing with condensation trapped between layers. This pack treats waterproofing as a built-in feature rather than an accessory—the Dyneema fabric itself blocks moisture, so you never fish for a cover or wonder if you remembered to pack it. The woven version of the material resists abrasion better than laminated Dyneema, which matters when you're dragging the pack in and out of a tent vestibule or setting it against trailside granite every day for weeks. That durability advantage is why this construction suits people who measure pack lifespan in thousands of miles rather than occasional weekends.

Good gift when

Backpackers logging serious trail miles over multiple seasons
People who need waterproof gear protection without pack cover hassle
Hikers who prefer frameless packs and know how to load them
Anyone switching between weekend trips and week-long stretches

Skip it if Frameless packs demand careful weight distribution and won't suit you if you're used to letting an internal frame do the organizing work for you.

Specs

Main Body Material: Dyneema Woven Composite 3.9 (200-denier)
Volume Options: 40L, 55L
Torso Length Options: Small, Medium, Large, Tall
Color Options: White, Black
Closure Type: Rolltop
Frame: Frameless
Side Pockets: Two solid-fabric exterior pockets
Center Pocket: Mesh exterior pocket
Waterproof: Yes

What's included

Junction backpack (volume and torso length as selected)

If you're giving it

You'll need their size

Requires both volume and torso length measurement, so coordinate with the recipient beforehand.

The maker

Hyperlite Mountain Gear introduced this pack more than seven years ago as a tool for versatile backcountry use. The design has evolved with updated fabric and revised shoulder strap construction, but the core approach remains: a waterproof, frameless pack that adapts to different trip lengths and conditions. The woven Dyneema material used in the current version offers improved abrasion resistance compared to earlier laminated fabrics, addressing wear patterns observed over thousands of trail miles. The pack is manufactured in the southwestern United States and has been used on long-distance trails including the Pacific Crest, Continental Divide, and Arizona routes.

The details

This frameless backpack uses woven Dyneema fabric for the main body, a material that combines low weight with complete waterproofing. The construction means you can cross streams, hike through rain, or set the pack down in wet grass without worrying about what's inside. The fabric itself won't absorb moisture or let water seep through.

The pack closes with a rolltop system that adjusts capacity as your load changes. When you're carrying several days of food, you roll it fewer times. As you eat down supplies, you compress the volume to keep everything snug. The shoulder straps are sewn through the back panel for direct weight transfer, and the design skips a frame to keep overall weight low.

Three exterior pockets give you organization without opening the main compartment. Two side pockets are made from solid fabric to protect contents from punctures or abrasion. The center pocket is mesh, which lets you see what's inside and allows wet items to dry while you walk. The lower edges of the side pockets sit low enough to grab a water bottle without taking the pack off.

You choose both volume and torso length when you order. The 40L version suits trips where you're resupplying every few days. The 55L option fits longer stretches between towns or trips where you're carrying bulkier gear. Torso sizing ensures the shoulder straps and hip belt land where they should, so the pack rides correctly whether you're five-foot-two or six-foot-four.

The woven Dyneema construction resists abrasion better than laminated versions of the material, so contact with rocks, branches, or pack edges causes less wear over time. This matters on extended trips where the pack takes daily friction from loading, unloading, and rough surfaces.

Hyperlite Mountain Gear

Junction

Rollable frameless pack with three exterior pockets, available in 40L and 55L volumes

$395at hyperlitemountaingear.com

Choose an option

Quantity

Buy from Hyperlite Mountain Gear

Ships and sold by Hyperlite Mountain Gear. About this merchant

The 3-second version

Main body built from fully woven Dyneema for waterproof protection
Frameless design with sewn-through shoulder straps for direct weight transfer
Rolltop closure adjusts volume as your load changes
Frameless design requires load management skill
Four torso sizes mean you must measure carefully
Woven fabric shows scuffs more than textured materials

Questions

How do I measure my torso length for sizing?: Measure from the top of your hipbone (where the hip belt should sit) to the prominent bone at the base of your neck (C7 vertebra). This measurement determines which torso length you need so the shoulder straps and hip belt align correctly. If you fall between sizes, consider how you prefer weight distribution—smaller sizes ride slightly higher, larger sizes slightly lower.
Can I use this pack in wet conditions without a rain cover?: Yes. The woven Dyneema fabric is fully waterproof and won't allow moisture to penetrate, so you don't need a separate rain cover. The rolltop closure keeps water from entering through the top when properly rolled. Just make sure to close the top securely and keep the solid-fabric side pockets zipped if rain is heavy.
What's the difference between the 40L and 55L versions?: The 40L version suits trips where you resupply every two to four days or carry minimal gear. The 55L option gives you room for longer stretches between resupply points or bulkier items like bear canisters, winter layers, or cooking equipment. Both use the same materials and pocket configuration.
Does a frameless pack work if I'm carrying heavier loads?: Frameless packs perform best with loads under about 25 to 30 pounds, depending on your experience and how you pack. They require you to arrange gear thoughtfully so weight sits close to your back and distributes evenly. If you regularly carry more weight or prefer not to think about load management, a framed pack will be more comfortable.
How do I clean this pack?: Wipe the Dyneema fabric with a damp cloth and mild soap when needed. The material doesn't absorb water, so it dries quickly and won't hold odors the way fabric packs can. Avoid machine washing, which can stress seams and zippers over time. For stubborn dirt, use a soft brush and rinse with clean water.