Playbook window features hook-and-loop attachment to conveniently place their go-to formations on their wrist, Extra-large play window offers additional 25% surface area for enhanced visibility, Dri-FIT® fabric wicks away moisture to keep their wrist cool and dry, Integrated belt loop allows them to attach plays on their waist, Contoured construction provides additional comfort when wearing to minimize distractions, Acetate covered window eliminates fogging for clear visibility when calling plays