Tenaya Mastia

Tenaya

The Mastia is a medium-stiff, aggressively downturned velcro shoe from Tenaya for bouldering and sport climbing. Typically sized 2 EU sizes below street size. Of 22 user reports, 13 find the heel loose and 19 rate the forefoot perfect. In stock at 16 shops from 139.90 EUR.

Aggressively curved shoe from Tenaya's Aerial Plus line, designed to power through steep boulder problems and overhanging sport routes. Down-angled, low-profile toe box drives into shallow pockets and thin cracks. Split-sole construction with Vibram XS Grip 3.5mm rubber delivers targeted grip where it matters most. Unlined construction keeps weight down and sensitivity high.

Best For

Best for bouldering and sport climbing on vertical, overhang and roof terrain. Aimed at intermediate to advanced climbers.

Among the 469 adult climbing shoes we track, the Mastia ranks in the top 8% for pocket climbing, the top 13% for hooking and the top 26% for sensitivity.

Strengths & Trade-offs

Mastia strengths

• Low-profile toe box attacks shallow pockets and thin edges
• Sticky rubber over the toe box and instep for toe hooks
• Unlined construction maximises sensitivity
• Velcro closure makes it quick on and off between burns
• Perforated tongue provides excellent breathability

Mastia trade-offs

• Aggressive shape is uncomfortable for longer sessions
• Split sole offers less support than full-length midsole designs
• Hard to wear for more than a pitch or two

How the Mastia fits

Typically sized 2 EU sizes below street size.

Minimal stretching expected.

Fit profile: wide width, standard forefoot volume, medium heel, suits egyptian and roman toe shapes.

Minimal stretch expected; minimal break-in; manufacturer suggests 1.5 to 2.5 sizes down from street size.

How it fit climbers with your foot shape: fit reports from feet like yours.

Mastia fit reports

Based on fit feedback from 22 owners who measured their feet with the climbing-gear.com foot scanner and rated this shoe at the toes, forefoot and heel (tight, perfect or loose).

Typical downsize: -2.0 EU from street size (n=22).

• Fits best for: egyptian toe shape, greek toe shape, medium toe length, mild hallux valgus, wide forefoot, medium instep height, medium heel depth
• Runs tight for: long toes, narrow forefoot
• Runs loose for: medium heel width, shallow heel, deep heel

• Toes: 73% perfect (n=22) - 16 perfect, 5 tight, 1 loose. Fits well for egyptian toe shape, greek toe shape, medium toe length…
• Forefoot: 86% perfect (n=22) - 19 perfect, 2 tight, 1 loose. Fits well for wide forefoot, medium instep height
• Heel: 41% perfect (n=22) - 9 perfect, 0 tight, 13 loose. Fits well for medium heel depth

Stiffness

Measured stiffness: 0.40 on our 0-1 scale (0 = softest). Among aggressive shoes it sits between the La Sportiva Skwama (0.33, softer) and the La Sportiva Solution (0.43, stiffer).

Mastia specifications

What the Mastia costs

Prices checked 15 Oct 2026 across 16 shops that currently stock it (139.90 to 190.00 EUR). Cheapest current offer: 139.90 EUR at hardloop.de, 22% below the 179.95 EUR list price.

Prices by size

Cheapest in-stock price per EU size and how many shops list that size, from the EU pool. Updated daily.

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