Altra's original road shoe has been upgraded! The Altra Instinct 4.5 features a brand new engineered mesh upper and updated midsole for comfort and durability. The outsole is now full rubber for enhanced durability, and the insole is one piece for a better underfoot feel. Hit the road or the race course in Altra’s original style.
Suitable for road
Use for form, training, and racing
Moderate cushion - 25 mm
Weight - 278 grams
- updated upper fit is more secure and engineered mesh is very comfortable
- midsole material feels more cushioned than previous versions and when combined with the full rubber outsole it is responsive and offers a good ground feel and grip
- zero drop and natural foot shape to maximize running form, toe splay, stability and power
Keep in Mind:
- We love Altra, but the only thing consistent about their sizing is that it can be inconsistent. Compared to other Altra models and previous versions we find these fit closer to true in size, or possibly a bit big. Try on your true size, and possibly a half size down before deciding.