The bottom of the anti-slip pattern, indoor and outdoor universal, effective anti-slip, to ensure safety. Self Standing Cane Tip ✘ ✘ ✘ ✘ ✔ ✔. Universal Compatibility ✔ ✔ ✔ ✔ ✔ ✔. Non-Slip Design ✔ ✔ ✔ ✔ ✔ ✔.