Alpaca Boot Inserts – Extra Warmth & Comfort for Every Step Give your feet an extra layer of insulating comfort with our Alpaca Boot Inserts. Made from soft, durable alpaca felt, these inserts naturally regulate temperature, keeping your feet warm in the cold and dry in damp conditions. Over time, they gently mold to your foot shape for a customized fit. Naturally Warm & Insulating – Alpaca fiber retains heat while remaining breathable. Hypoallergenic & Odor-Resistant – Free from lanolin and naturally moisture-wicking. Molds to Your Feet – Over time, the felt conforms to create the perfect fit. Customizable Size – Available in Medium, Large, and X-Large—trim as needed for the ideal fit. Thickness: 3/8"Sizes: Medium: Fits shoe sizes 6-9 Large: Fits shoe sizes 10-13 X-Large: Fits shoe sizes 13-15 Slip these into your favorite boots for all-day warmth and comfort!