Puma Deviate Nitro 3 Sizing Guide: Does It Run Small or True to Size?

Fit Notes

Adidas Adizero Boston 12

The Boston 12 is known for running slightly long and featuring a very generous, wide toe box. When transitioning to the Puma Deviate Nitro 3, you are moving to a shoe with an aggressively narrow geometry and a shallow vertical ceiling. To achieve a comparable forefoot feel and prevent lateral toe pinching, a half-size increase to US 10.5 is highly recommended, or you should opt for Puma's dedicated Wide variant.

Nike Zoom Fly 6

Both models target the plated training category and feature snug, performance-oriented uppers. While the Nike Zoom Fly 6 has an exceptionally low-volume upper, its forefoot platform is slightly wider than the Puma. Narrow-to-medium width runners can safely maintain a consistent size across both brands, staying true to size at US 10.

Saucony Endorphin Speed 4

The Endorphin Speed 4 offers a more traditional, standard-width toe box that naturally accommodates metatarsal splay. Transitioning to the highly tapered forefoot and narrow 91.5 mm internal width of the Deviate Nitro 3 requires a half-size up (US 10.5) to maintain a less restrictive toe-box environment and prevent hotspots.

Asics Novablast 5

Asics running shoes generally feature a wider, more relaxed toe box and a softer overall upper fit. Sizing up a half-size to a US 10.5 in the Deviate Nitro 3 is essential to offset the transition from Asics' accommodating design to Puma's aggressively narrow, performance-fit upper.