Gravity Shoes (heels #4). These ones change shape using both hydraulics to dampen the impact and pneumatic to cushion the foot when impact is made with the ground in higher gravity environments.
These Spring Heel Shoes Can Only Be Made with 3D Printing | All3DP
Anti-Gravity' Shoes By Yukako Hihara — CONCEPTKICKS®
Black White Lot Pumps Stilettos Gravity Wedges Leather Platform High Heels Shoes | eBay
Size 10 - Sheen Red Patent Anti Gravity Heel – Violet Vixen