These needles are the proper size, and will not puncture the liners if correctly employed WARNING: Products can not be returned or exchanged if liner is ruined or punctured because of poor inflation or needle use A versatile liner suitable for several head shapes gives comfort and ease and balance https://edwinnwoqr.bloggerswise.com/37566224/5-simple-statements-about-riddell-speedflex-adult-large-explained