Salomon Shift Supra S BOA 100 GW

The Shift Supra S BOA is a freerider's boot: comfortable enough for a full day in the mountains, precise enough to trust your edge on the way down. The BOA Fit System gives you micro-adjustable control with one turn, while the Exobelt strap locks your heel tight—no slipping during ascents, no blisters. Walk mode opens up with PowerWedge technology for a real range of motion on the climb.

Why we rate it

It's built for skiers who move between ski and walk mode without fussing. The 100 flex sits in that middle ground—stiff enough for confident carved turns and confident enough for varied snow, forgiving enough that you won't fight it all day. The Custom Shell HD process and My Custom Fit liner are both mouldable, so you can personalise the fit to your foot. GripWalk sole hooks straight into touring bindings if you want to go further.

The Freespine bar linking cuff to shell lets your calf move when you're climbing, then powers every edge when you're skiing. Heel hold is exceptional: the claw strap, Exobelt and BOA all work together.

Who it's for

Intermediate to advanced skiers exploring the mountain at their own pace. Suits medium-width feet. The medium flex and all-mountain character work across groomers, off-piste and variable snow. If you're moving between guided freeride days and resort skiing, this is a sensible all-rounder.

Key features

• BOA Fit System — One-turn micro-adjustable closure for superior heel hold and edge control
• Exobelt strap — Strong textile fastener that locks your heel and prevents slipping on ascents
• PowerWedge — Unlocks calf motion and range for hiking; locks down for alpine power delivery
• Custom Shell HD — Shell material you can heat-mould for personalised fit
• My Custom Fit liner — 3D mouldable freeride liner
• GripWalk sole — ISO 23223 compatible with touring bindings and grippy on summer rock
• Freespine technology — Calf-to-shell connection for responsive edge work and efficient climbing

Fit and feel

Medium last (100 mm at Mondopoint 26.5) with medium instep volume. The medium flex gives direct power without being rigid—you'll feel the snow underfoot rather than fighting stiffness. The calf fit is precise and the heel pocket keeps your foot planted. Both shell and liner mould to your foot's shape if you want to dial in the comfort.