Nike Air Zoom Pegasus 39 Running Shoes

Description

Upper: Flexible forefoot mesh that accommodates natural metatarsal splay, backed by an internal heel counter to lock the calcaneus bone over the center of the shoe.
Midsole Cushioning: High-rebound React foam stack paired with dual Air Zoom units engineered to dissipate vertical landing forces and reduce shock loads on knees and ankles.
Cushioning & Stability Technologies: Flywire technology wraps the midfoot arch directly, providing structural midfoot containment to reduce tension along the plantar fascia band.
Outsole: Broad, full-contact rubber sole mapped to eliminate localized pressure spikes under the heel bone and metatarsal heads.

Key Features & Benefits

Joint Shock Mitigation: Dual Air Zoom pods and React foam buffer continuous surface strikes to lower impact stress on ankles and knees.
Flywire Arch Support: Woven midfoot cables pull the upper securely around the arch, limiting excessive arch collapse under body weight.
Grounded Heel Alignment: Rigid internal heel counter cradles the rearfoot to maintain proper gait alignment from strike to toe-off.
Removable Footbed: Factory sockliner removes easily to accommodate custom medical orthotics or high-arch support insoles.

Sizing & Fit Advice

Fits True to Size (TTS). The removable sockliner easily accommodates custom orthotics; select wide options if using thick custom inserts.

How to Find Your Size (Step-by-Step Guide)

1. Setup: Place a plain sheet of paper on a hard floor, flushed against a flat wall. 2. Position: Stand on the paper with your heel resting gently against the wall (wearing your preferred athletic socks). 3. Mark: Mark the furthest point of your longest toe on the paper with a pencil. 4. Measure: Measure the distance from the edge of the paper (wall) to your mark in Centimeters (CM).
Recommended Fitting Margin:
Casual / Lifestyle Sneakers: Add +0.5 cm to your measured foot length.
Performance Running / Basketball: Add +0.5 cm to +1.0 cm for movement clearance and to prevent toe impact.

Nike Signature Fit & Characteristics

Fit Profile: Nike shoes generally feature a snug, athletic wrap around the midfoot and heel. Models like the Air Max, Pegasus, and Mercurial series tend to fit narrower than brands like New Balance or Brooks.