OTTO CAP Seamless 6 Panel Mid Profile Baseball Cap, Innovative Seamless 6 Panel Design!, Key Product Features. Mid Profile - Our most popular profile, designed for a contoured fit Unique Seamless 6 Panel Design - Removes the center seam, creating a smooth surface ideal for easy sublimation and embroidery Stretchable T4 Polyester Twill - Features a heavier, cotton-like texture for enhanced durability and long-lasting applications Dust Resistant - Prevents dust buildup with its tight weave and anti-static fabric Plastic Snap - Premium durable closure for a secure fit and easy adjustment Micro Mesh Standard Performance Sweatband - Moisture wicking technology for dry, all-day comfort