The updated and high-performance Brooks Beast 20 road-running shoes are designed for comfortable movement and motion control for smooth heel-to-toe transitions. Predecessor: Beast 18. Support Type: Overpronation/Stability. Cushioning: Maximum cushioning. Surface: Road. Differential: 12 mm. Built for the sever overpronator who requires motion control and high-level cushioning. Breathable engineered mesh upper provides a comfortable and cool in-shoe environment. External, structured saddle allows for adjustable support. Lace-up closure. External heel counter helps stabilize the foot. Plush tongue and collar. Element mesh lining wicks moisture away, and offers a great in-shoe feel. Removable sockliner. BioMoGo DNA midsole is a blend of earth-friendly BioMoGo and responsive Brooks DNA, and has a gender-friendly cushioning design, making for a dynamic ride. Full-length S-257 Cushsole midsole compound utilizes an insole board for increased plush and flexibility. DRB Accel shank-like unit promotes torsional rigidity in the mid-foot, while allowing the heel and forefoot to act independently. GuideRails support keeps you locked-in for comfortable and secure movement. Full-length Segmented Crash Pad encourages a smooth heel-to-toe transition with each step. Durable HPR Green outsole is comprised of environment-friendly silica for premium wet-dry traction and skid resistance. Abrasion-resistant HPR Plus rubber outsole provides extended durability right where its needed. Omega Flex Grooves allow for more natural forefoot movement and fluidity. Linear platform. Imported. Measurements: Weight: 13 oz Product measurements were taken using size 9, width D - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.