Select Sport America Numero 10 Turf Soccer Ball Optimal price/performance and extreme durability Hand-stitched for tighter and stronger seams 1.5mm "Grain" PU cover with zero-wing latex bladder for optimal bounce Meets NFHS/NCAA regulations 2 year warranty. Please note: Ball ships deflated. A ball pump is required to inflate the ball before use. Please note: As with all premium soccer balls, ball should be topped off with air every few days for best results.