COMFORTABLE AND BREATHABLE: The heel of the sneaker is made of high-quality Hsinchu fabric and built-in sponge for a soft and comfortable feel. The soft design helps reduce friction between the shoe and the foot, helping to prevent foot pain and blisters during extended wear. SAY GOODBYE TO FOOT DISCOMFORT: The heel protector is designed for individuals with sore feet or blisters. Features a 180° non-slip comfort fit and an enhanced wear zone. Attach the insoles to your shoes to help prevent rubbing or heel slippage. The heel grip provides a comfortable experience and helps address common shoe fit issues. ADJUSTABLE FIT: The package includes 4 pairs of 10 mm thick heel pads. The heel grip can be trimmed to fit different heel heights and shoe shapes for a customized fit. EASY TO USE: The insole features a self-adhesive backing. The reinforced adhesive provides a secure bond without damaging the shoe. Simply peel off the liner and press firmly into place. WIDE COMPATIBILITY: Heel inserts are ideal for slightly loose shoes and are suitable for use with canvas shoes, running shoes, boots, trainers, work shoes, and leather shoes. Not recommended for shoes with thick internal linings, such as fleece-lined boots. Note: Measurements are manually taken; please allow 1-5 cm variation. Due to differences in lighting and screen displays, colors may vary slightly. Actual product may differ in appearance.