These needles are the right size, and may not puncture the liners if adequately used WARNING: Product can not be returned or exchanged if liner is broken or punctured due to poor inflation or needle use A flexible liner designed for a variety of head styles presents convenience and balance https://riddell-speedflex-adult-l16048.blogozz.com/30361156/speedflex-adult-large-can-be-fun-for-anyone