eSUN PEBA LW 3D Printer Filament, 0.8kg Spool, Lightweight Active Foaming Flexible Filament, Adjustable Hardness (66A-92A) & Low Density, 60% Rebound for Footwear, Cushioning & Wearables, Black

Founded in 2002, eSUN compounds polymer in-house and supplies raw material to a number of white-label brands. Their own catalog covers PLA through high-temperature engineering grades — one of the broadest material ranges from a single manufacturer.