Gray felt house slipper with an anatomical insole. Vegan, PETA vegan approved. Designed and manufactured in our factories in Elche, under sustainable production and local suppliers. - Upper: Felt - Insole: Cork and foam - Top layer of the insole: Synthetic - Sole: EVA The anatomical insole offers support, reduces pressure, improves alignment and stabilization, decreases fatigue, and prevents injuries, providing comfort and protection while walking.