So you're getting into mountaineering

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Boots

Your boots are the most consequential gear decision you'll make. They need to accept crampons (a specific rigidity requirement, not just 'sturdy hiking boots'), stay warm on overnight bivouacs, and fit precisely — hot spots become blisters at hour four, and blisters become frostbite risk at altitude. Get properly fitted at a gear shop. Don't buy mountaineering boots online without trying them on first. The crampon-compatibility question — B1 vs. B2 vs. B3 — depends on your objective: glacier travel needs B1/B2, technical mixed climbing needs B3. For Rainier or Shasta, a B1 or B2 boot is the sweet spot.

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Ice Axe

The ice axe is your primary safety tool in the mountains. You use it for balance on steep slopes, for self-arrest if you slip (you drive the pick into the snow to stop a fall), and for building anchors. The right length for a beginner is one where, when you hold the spike end and rest it vertically at your side, the head is roughly at your wrist — typically 60-70cm. Curved 'technical' axes are for ice climbing. For beginner mountaineering, you want a classic straight shaft, which gives the best grip and leverage for self-arrest.

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Crampons

Crampons are steel spikes that attach to your boots to grip snow and ice. For beginner mountaineering, you need 12-point crampons — two front points and ten downward-facing points. The binding system must match your boot's rigidity rating: strap crampons fit almost any boot but move more; step-in (bail) crampons require a stiff, welt-edged boot but stay more secure. For your first glacier objective, strap crampons are fine. The front points are what let you kick steps on steep terrain — without them, you're limited to low-angle snow.

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Harness

On glaciated routes, your rope team travels roped together to catch each other if someone breaks through a snow bridge into a crevasse. Your harness needs to be comfortable for hours of active travel — not just static belaying at a sport crag. Mountaineering harnesses are lighter, pack smaller, and often have less padding than climbing harnesses (since you're moving constantly rather than hanging). If you already own a well-fitted sport climbing harness, you can likely start with that.

Helmet

Helmets are non-negotiable in the mountains. Falling ice, rockfall in thaw conditions, and a stumble on steep snow are all real hazards. Modern mountaineering helmets weigh under 250g and fit naturally over a thin beanie. The certification you want is UIAA or CE EN 12492. Don't use a bike helmet — they're not rated for the same impact vectors. Fit matters: the helmet should sit level, not tipped back, with the front brim about two finger-widths above your eyebrows.

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Clothing System

The mountain kills you with temperature swings, not single conditions. At dawn you're hiking up in the cold, by 10am you're sweating on a south-facing slope, and by summit time you're back in wind and dropping temps. The solution is a three-layer system: moisture-wicking base layer (merino or synthetic — not cotton, ever), insulating mid-layer (down or synthetic puffer), and a waterproof hard shell on the outside. Most beginners underinvest in the shell and overinvest in everything else. A good waterproof-breathable hard shell with taped seams is the non-negotiable. The rest can be mix-and-match.