These needles are the proper size, and may not puncture the liners if thoroughly utilised WARNING: Merchandise can not be returned or exchanged if liner is weakened or punctured as a consequence of improper inflation or needle use A versatile liner designed for many head shapes provides comfort and stability https://adultmediumspeedflex26794.yomoblog.com/37070638/speedflex-adult-large-things-to-know-before-you-buy