Brooks Glycerin 22 Road Running Shoes - Men's Black/Grey/White 8 1D. The midsole is made from DNA Tuned innovative nitrogen-infused cushioning. The heel contains large cells for plush landings while the forefoot has small cells for energizing toe-offs. Specifications for Brooks Glycerin 22 Road Running Shoes - Men's: Manufacturer: Brooks Gender: Male Age Group: Adults Boot Style: Shoes Activity/Occasion: Running Seasonal/Temperature Use: Summer Weight: 10.2 oz Features of Brooks Glycerin 22 Road Running Shoes - Men's Tuned cushion Accommodating fit Smooth stable transitions Package Contents: Brooks Glycerin 22 Road Running Shoes - Men's Brooks 1104451D090.080: Glycerin 22 Road Running Shoes - Men's Black/Grey/White 8 1D