The athletes have spoken and the new Reebok CrossFit Nano 8 Flexweave training shoes reflect their wants and needs. These CrossFit training shoes feature the very best in durable, yet comfortable materials that athletes require for their demanding training sessions. This new version features an added heel bootie construction that is more comfortable when added to the dual-density midsole and the more rugged NanoWeave upper. While highly durable, this woven upper is still lightweight and breathable. Forefoot flex grooves offer the flexibility you need for jumping and sprinting, while the toe tection reduces wear around the toe area. Upper: NanoWeave technology on the upper provides breathable support and comfort. Anatomical toe box and low-cut design offers freedom of movement and quicker, timed transitions. New Heel bootie provides a more comfortable fit than previous versions. Toe Tection adds durability to the toe area. Midsole:Dual-density midsole for enhanced comfort and flexibility in the forefoot. Removable insole. Outsole: 360-degree TPU heel wrap for a locked-in feel. High abrasion rubber outsole with an improved grip pattern for traction and durability. RopePro provides maximum traction and protection during rope climbs. Note Regarding Fit: Though fit cannot be guaranteed without an in-person assessment, the Nano 8 has a very accommodating fit and does not fit as snug as previous models. You may consider ordering a half size down from previous editions.