Sprintblock

Marsoni

M251S

$174.95

Get it in 3 business days with 1 day shipping. Friday, May 29

SprintblockSpecialising in the art of simplification, the Sprintblock should be an essential tool in any serious BMX racer's training toolbox. Designed and developed by one of the world's most eminent BMX coaches, Sean Dwight, it's used by Olympic Gold Medalist Connor Fields, as well as all the riders in the Dwight "training camp" crew. Like any simple, effective design, there are many years of development and intellectual property embedded within this training

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If you have dry callused soles, these are your answer. All my calluses left and my feet were very soft. They should not be walked in unless you are very, very careful as you will slip and fall. I stopped using them for a while and all my problem calluses are back, even when I use lotion at night. They tell you not to sleep in them, I don't know why. I do put these on at night and end up taking them off later as they're not comfortable to sleep in.

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Reviewed in the United States on April 28, 2026