Our amazing Blister Blocker Anti-Friction Balm creates an invisible barrier to help prevent blisters, chafing, and irritation on skin. All natural, non-greasy, fragrance free, cruelty-free, and compact to take with you anywhere, the Blister Blocker is great for breaking in new shoes or for preparing your feet for those particularly long days. Each tube contains 4.5 ml (0.15 oz).