"Fuzzy Frog" Spa Slippers from Spa Comforts. Swaddle your feet in nurturing warmth and comfort while enjoying the fragrant aroma of peppermint and lavender flowers. The removable herb and grain pack is microwavable and freezable to provide heat or cold therapy. Use heat therapy to soothe sore, achy feet, comfort arthritic pain or just reduce the discomfort of a "bad shoe day". Cool in the freezer to decrease swelling associated with long hours on your feet or to cool down on hot summer days. S/M fits women up to size 8 1/2 and men to size 7. M/L fits women 8 1/2 and up and men up to size 11.