Acorn slippers got their start when the company's founder gave away nine homemade pairs of "slipper socks" to offer warmth and warm memories to his family. Therein a delightful cottage industry was born. Handcrafted Acorn slippers are renowned for their heavenly comfort, whether they're slippers of luxurious merino sheepskin, boiled wool, or fleece. All Acorn slippers have famous memory foam cushion and indoor/outdoor soles.