AfterPay Available - Introducing the all-new Brook Glycerin Stealthfit 20. Sleek in exterior, yet technical in performance, this new addition promotes a highly energetic run through it's DNA LOFT v3 nitrogen-infused cushioning, and premium lightweight features that aid propulsion. Ideal for runners who want a close-to-foot feel, yet require added stability through the GuideRails Holistic Support System. The Stealthfit construction is adaptable, and grants softness with every step through strategic stretch and compression that moulds to the foot.