These needles are the correct size, and should not puncture the liners if properly utilized WARNING: Solution cannot be returned or exchanged if liner is broken or punctured on account of inappropriate inflation or needle use A flexible liner created for many head shapes provides convenience and stability Detachable dampness-resistant https://riddell-speedflex-adult-l26972.humor-blog.com/30398179/facts-about-adult-medium-speedflex-revealed