TheGlycerin 20features:

• Now featuring nitrogen-infused DNA LOFT v3, super soft cushioning optimized to be light weight, responsive, and durable with plush comfort
• Innovative nitrogen infusion process lets us fine-tune the softness with careful precision so we never sacrifice weight, durability, or responsiveness
• Cushioning technologies all start with DNA because they react to your unique stride
• Plush and breathable engineered air mesh upper offers a secure fit, comfortably holding the foot in place
• Redesigned midsole and outsole offer a widened platform for smoother, easier transition