The DIABOLO is a comfort shoe packed with performance and a favorite for long gym sessions, sport climbs and even multi-pitch trad routes. Boreal's Slim Fit Last with genuine split leather (colored) and synthetic lorica leather (white) uppers both conform to your foot shape and also limit stretch - to stabilize and support. The DIABOLO and women's DIABOLA model are moderately curved, lightly cambered and pointy at the big and 2nd toes with tensioned 1.1 mm FS Quattro toe strap. Underfoot is a half midsole - for edging support up front and one-to-one conformity from arch to padded comfort heel. V wrap heel rand is mildly tensioned and sports a molded high friction heel cup. FS Quattro cooked rubber. Made in Spain, shipped worldwide. Guaranteed Fit

TOOL TIP: For close barefoot fit - convert your US running shoe size to UK (ie US 11 = UK 10). Stick with this size for balance of comfort & performance or subtract 1/2 UK size - (UK 9.5) for super snug fit. For women's sizes - a UK5 = US Women's 7 as example.