How ice axes, crampons, and trekking poles attach to a mountaineering backpack, and how to choose between loop and platform crampon systems.
By Priya Anand, Backpacking Gear Research Writer · Published September 14, 2026, 6:03 PM ET
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In plain English
Mountain climbers carry a few tools that are sharp, pointy and awkward. An ice axe is a walking stick with a metal pick on top, used for balance and to stop a slide on snow. Crampons are spiky metal frames that strap under your boots so you can grip ice. Neither belongs loose inside your bag, where the points can poke through the fabric or stab your gear.
So climbing packs have special loops and straps on the outside. Think of them like the clips on a tool belt: each tool has its own spot, and a strap keeps it from swinging around.
The main choice is how to carry crampons. A pouch is like a sheath for a knife, safe but slower to use with gloves on. A strap platform is quicker, but the points stay exposed, so you have to be more careful with them.
Attaching an ice axe, crampons, or trekking poles to a mountaineering pack means using the pack's dedicated external loops and straps rather than stowing sharp or awkward gear inside the main compartment, where it can puncture fabric or shift load. Each tool has its own standard attachment method.
How do you attach an ice axe to a backpack?
An ice axe attaches by sliding the head or pick through a reinforced loop at the base of the pack, then cinching an adjustable strap or bungee near the top of the shaft to hold it flat against the pack body. This two-point system — bottom loop plus upper retention strap — keeps the axe from swinging while walking and from working loose on rough ground.
Most mountaineering and alpine packs include two axe loops side by side, letting a climber carry a second tool or an ice tool for steeper terrain. The upper strap is usually webbing with a buckle, though some ultralight alpine packs use a simple bungee-and-hook instead to save weight. The axe head should sit close to the pack body with the pick oriented so it can't catch a sleeve or a passing hiker on the trail.
How do you attach crampons to a backpack?
Crampons attach either inside a dedicated front pouch that fully covers the points, or on an exterior strap platform that compresses them against the pack's front panel with points exposed. The choice is a trade-off between speed and protection.
Pouch system: fully encloses crampon points in a reinforced sleeve, protecting the pack fabric and anything nearby, but slower to pack and unpack with gloves on.
Platform system: an external bungee or strap cross-pattern holds crampons against the front panel with points facing out, quick to use at a boot-crampon transition but harder on pack fabric over repeated trips.
Some packs built for glacier travel and alpine climbing include both a small front pouch and compression straps, so the climber can choose per objective. Crampons should always face away from the back panel and shoulder straps, regardless of system, to avoid snagging fabric or clothing during the carry.
How do you attach trekking poles to a backpack?
Trekking poles attach to a mountaineering pack using side compression straps or a dedicated pole-carry loop, with the pole tips secured low and the grips held near the top by a cinch strap or bungee. This keeps poles out of the way once a climber switches to hands-on scrambling or an ice axe for balance.
The most common method loops the pole tips through a lower side-compression strap, then folds the poles up against the pack body where an upper strap or the same compression system holds the grips in place. Packs with a quick-release bungee-and-hook system allow poles to go on or come off in a few seconds without unclipping a full buckle, which matters when the terrain changes from a maintained trail to a scramble or glacier crossing multiple times in one day.
Choosing between loop and platform crampon systems
A climber whose route mixes long snow approaches with technical rock should lean toward a pouch system, since it protects both the pack and the rock from crampon points during scrambling sections. A climber doing frequent, fast crampon transitions — glacier travel with repeated boot changes — benefits more from an exterior platform, since it can be strapped on or off in seconds. Neither system is universally better; the right choice follows the objective, matching the same logic used to size a pack for glacier travel versus a pack built for technical scrambling and climbing.
Frequently Asked Questions
Yes. Most mountaineering and alpine packs include two axe loops at the base of the pack, each paired with its own upper retention strap, so a climber can carry a walking axe and a technical ice tool on the same pack without doubling up on one loop.
Crampon points should always face away from the back panel and shoulder straps, whether they're in a fabric pouch or strapped to an external platform. Points facing inward risk snagging clothing, cutting pack fabric, or injuring the wearer while shouldering the pack.
Nearly all purpose-built mountaineering and alpine packs include at least one ice-axe loop with an upper retention strap. General hiking or overnight backpacking packs often lack this feature, so climbers moving from hiking to mountaineering usually need a pack built specifically for technical carry.
Axes and crampons are not heavy, but loose metal on the outside of a pack behaves like a small pendulum, tugging the load off-center with every step. A review of soldier load carriage found that keeping the load's center of mass as close as possible to the body's gives the lowest energy cost.1 US Army doctrine goes further, saying heavy items packed higher and closer to the body can cut marching energy cost by as much as 25% compared with low, away-from-body placement, and that compression straps keep the internal load from shifting.3
The same logic applies to the outside of the pack. Cinch the upper retention strap until the axe shaft cannot rock, route pole tips through the lowest strap you have, and tighten side compression before you attach anything, so the tools sit against a firm pack body rather than a soft, half-empty one.
When poles belong on the pack and when in your hands
Stowing poles quickly matters because the terrain decides whether they help. On a 25-degree downhill ramp, hiking poles significantly lowered ground reaction force and knee joint moment, with knee compressive and shear forces falling by 12 to 25%.2 A later study found poles reduced lower-limb joint loading on descents with no pack, a day pack at 15% of body weight and an expedition pack at 30%, and the benefit held across all three.4
On level ground the picture changes: one study found walking with poles did not appear to reduce knee compression, even when people pushed 2.4 times harder on them.5 For alpine days that means poles out on long snow descents, then onto the pack when the route turns to scrambling or axe work. A quick-release keeper that works with gloves on earns its place on routes that switch back and forth.
Protecting fabric from points and edges
Crampon points and axe picks are the most common cause of small holes in climbing packs. GEAR AID markets its Tenacious Tape for small tears in packs and ripstop fabrics, and its instructions say to clean the area with isopropyl alcohol, cut the patch with rounded corners and overlap the damage by at least half an inch, patching both sides on larger holes.6,7 Silicone-coated fabrics are different: GEAR AID says they need a silicone sealant because silicone only sticks to silicone.8
Some makers build around abrasion instead. Dyneema says its composite fabrics won't tear like plain nylon or polyester, and that hybrid versions add a separate face fabric for extra abrasion resistance.9 Hyperlite states its woven Dyneema fabric is more abrasion- and tear-resistant than its earlier fabrics.10 Those are the makers' own claims; whatever the fabric, a pouch or a points-out carry that keeps metal away from the pack body is the cheapest protection.
