Altra 3-Sum Men's Shoes Orange
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Run natural off the bike with the Altra 3-Sum. Designed to meet the needs of the competitive triathlete, this racing shoe features a zero drop platform to encourage an efficient stride, while retaining the underfoot protection you need to tackle longer distances. A seamless upper is tailor-made for sockless wear, and a quicklace system allows you to fly through T2. An anatomical fit allows for toe splay without sacrificing security.
Model Number: A1224-1
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Weight: 8.2 oz (size 9)
Stack Height: Heel (13mm), Forefoot (13mm)
Available Widths: D=Medium
How It Fits (based on width D)
- Sizing: Standard running shoe length
- Heel: Medium to wide
- Midfoot: Medium volume
- Forefoot: Wide
- Toebox Height: Medium to low
- Arch Structure: Medium to low
- Shoe Shape: Semi-Straight
The 3-Sum is a minimum featured, minimum neutral shoe intended for training and racing.
- A-Bound is a recycled, environmentally friendly midsole compound for resilient underfoot protection.
- EVA midsole foam for durable cushioning.
- Natural Ride System (NRS) design includes a more natural, foot-shaped last, zero millimeter heel to toe drop, and metatarsal-specific shapes in the outsole to assist in proper foot mechanics and allow for more natural foot movement.
- Natural Foot Design follows the natural shape of the foot for ultimate comfort.
- Quick Dry Air Mesh wicks water away from your foot while remaining light and breathable.
- Support Insoles are 5mm-thick removable insoles designed for runners needing more traditional support and a molded arch.
- Seamless Upper reduces irritation and provides next-to-foot comfort.
- Pull Tabs allows for quick entry with a single-handed pull.
- Asymmetrical Lacing Design follows the shape of the foot for improved fit and feel.
- Strobel Last with the upper stitched to full length fabric for a comfortable underfoot feel.
- SpeedPod Outsole follows the natural construction of the human foot for maximum flexibility and a responsive ride.
- Blown Rubber offers lightweight traction, flexibility, and a responsive ride.
- Drainage Holes in the heel and forefoot allow excess water to exit the shoe.
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FOOTWEAR PERFORMANCE CHARACTERISTICS
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