Brooks Glycerin GTS 21

Features:

• Supreme softness.  Now with more super-soft, nitrogen-infused DNA LOFT v3 cushioning that is optimized to be lightweight, responsive, and durable for plush comfort. .
• Improved fit. New, engineered warp knit upper is breathable and allows for a flexible, accommodating fit while staying soft against your foot.
• GuideRails holistic support system. Brooks innovative technology supports your body in its natural motion path while keeping excess motion in check

What’s New:

• New RoadTack rubber includes recycled silica and is lightweight and durable. 
• Additional 2mm of DNA LOFT v3 midsole for a plush ride. 
• Made with recycled materials equivalent to 5 plastic water bottles

Specs:

• Weight - 261g
• Heel-to-Toe Drop - 10mm