100% Alpaca Felt Insoles for Men, Women & Kids | Warrior Alpaca Socks
Amazon.com: Wool Felt Insoles for Men and Women – 8mm, Long-Lasting Breathable Shoe Inserts with Cushioning & Moisture Control | Adjustable Wool Shoes Insoles | Warm Wool Boot Insoles for Winter
Product Care & Cleaning Information | SOREL
3 Ways to Wash Felt - wikiHow
Thick Felt Boot Liners - warm insoles for boots or shoes – Joe's Toes