The blue Boostic is flimsy and not stiff; they think it's trash.
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climbing shoe
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Owns both: the Boostic relaxes a bit with use and takes a while to soften enough for volumes and dual-tex.
The Boostic heel feels not-perfect but delivers when called upon.
Just got Boostics half a size down: way tighter and more supportive than their VSRs in the same size.
Has two pairs of the 2021 Boostic, one resoled five times, and it holds its downturn and upper superbly; good for steep routes, but sags when hot.
With a wide but low-volume forefoot and Egyptian toes, finds the Boostic a perfect fit, along with Katanas and Instincts.