Everything our customers love about the M-Carbon 8 in a 6-inch delivery! Featuring OTB's carbon fiber propulsion plate, the M-Carbon 6 is OTB's follow-up to the game-changing 8-inch carbon-plated boot that has been winning both tactical competitions and rave reviews from customers. The marathon inspired carbon plate delivers incredible spring, support, and enhanced forward propulsion to maximize athletic performance.

OTB's sizing is similar to many popular running shoe brands, including Hoka, Asics, Brooks, and Altra. For women, we recommend subtracting 1.5 from your running shoe size to find your OTB Boot size (e.g., if you wear a size 8.5 in women's running shoes, you would be a size 7 in OTB Boots).

If you require a wider fit, we suggest WIDE options that correspond to approximately EE+ width.