Inspired by tired feet at the end of a long race the Altra Paradigm 4.5 continues to innovate the design and function of your favorite race-day shoe for ultimate comfort and support. Predecessor: Paradigm 4. Support Type: Neutral to underpronation. Cushioning: Balanced cushioning. Surface: Road/Trail/Fitness. Differential: 0 mm. Stack Height: 30 mm. Zero Drop Platform places your heel and forefoot the same distance from the ground to encourage proper low-impact form during trail runs. Quick-drying engineered knit upper provides breathable all-day comfort. FootShape toe box allows your toes to relax and spread naturally for more comfort and stability during uphill climbs and downhill descents. Lace-up closure. Lightly padded tongue and collar. Breathable mesh lining for a great in-shoe feel. Removable 5 mm Sculpted footbed. Altra EGO dual-nature midsole compound is responsive yet soft for increased energy return. FootPod midsole and outsole technology maps the foot's bones and tendons boosting pliability. GUIDERAIL feature found in Altra dynamic support shoes acts like a highway guide rail to provide guidance when you need it. STABILIPOD acts as a stabilizing tripod by enhancing the three natural stability zones in your foot to help prevent excessive foot collapse and pronation. Imported. Measurements: Weight: 12 oz 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.