Jail Jam Unisex Warm Neck Warmer A great alternative to the classic scarf. The Jail Jam Bustle Loop Unisex winter neckerchief is made for the entire winter season. The neckerchief looks good, goes with any outfit and reliably warms you. This is due to the acrylic material. The ribbed design is modern and goes great with the Jail Jam Bustle Hat. Material: 100% acrylic