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The eye-catching Sensa is a downturned, asymmetrical shoe with a unique fit that—thanks to the EdgeTek wraparound midsole tied into the front rand—drove remarkable power into the outer foot, making for strong outside edging. I sized a half size down from my SS, and was glad I did—you want these snug. The 4mm Fuse sole was grippy and sensitive, and the molded heel cup may be the most locked-in of any slipper I’ve climbed in. This light, airy slipper is a machine on the steeps!