Adorn those cute feet of your little girl with our diverse range of slippers made of materials like rubber, canvas, suede, etc. Since 1973, Acorn has offered boots and slippers for winter. The founder, David Quinn, says that the footwear is symbolic of the spirit of the winter in Maine, where it originated. They make use of sustainable materials to promote using recycled materials. Olive is one of the oldest green shades invented.