44% True to size
88% Felt true to width
67% Moderate arch support
- SKU: #8977652
- View the size chart
- Get the most out of your fitness routine with the re-engineered Instinct 4.5 athletic shoes from Altra®.
- Predecessor: Instinct 4.
- Support Type: Neutral.
- Cushioning: Moderate.
- Surface: Road.
- Great for running, fitness, walking, cross training.
- Differential: 0 mm.
- Altra Zero Drop recommends that those new to natural running and zero-drop footwear transition slowly by wearing these on shorter runs and gradually building up to regular mileage.
- Built for the neutral runner seeking moderate underfoot cushioning.
- Ideal for running, ultramarathons, long distance walking, and cross training.
- Designed to improve running form, toe splay, stability, and power.
- Engineered mesh upper for superior breathability.
- 3D printed pinstripes.
- Lace-up closure.
- FootShape™ toe box allows the toes to relax and spread naturally for optimal comfort, speed, and stability.
- Lightly padded tongue and collar.
- Breathable DriLex™ lining offers a great in-shoe feel.
- 6mm contoured footbed.
- Natural Ride System blends outsole and midsole componentry, along with anatomical design, the Zero Drop platform and foot-shaped last to promote a more natural stride.
- Zero Drop construction places the heel and forefoot at the same distance from the ground to encourage natural, low-impact running form.
- INNERFLEX™ grid-like midsole flex grooves add flexibility right where it's needed to promote speed and enhance performance.
- Ultralightweight Abound EVA midsole foam and a unique energy-returning compound work together to protect feet upon impact, and add sprint to each step.
- Foot Pod Technology™ consists of a rubber outsole and midsole layout that maps the foot's bones and tendons for more natural flexibility.
- Total Stack Height (total thickness of midsole and outsole underfoot): 25 mm
- Product measurements were taken using size 11.5, width D - Medium. Please note that measurements may vary by size.
- Weight of footwear is based on a single item, not a pair.
- Weight: 12 oz
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