K Collection Aubergine Clay Heat Bag with Cover. Material: Clay, Cotton, Polyester. Design: Aubergine. Allergen-Free, Microwave Safe, Odour-Free, Reusable. Sustainability: Eco Friendly. Fabric: Plush. Please Note: Size guide image relates to standard sizes only. Brand sizes may vary. Please Note: Group images are not representative of quantity sold. Pack quantity is listed above.