The Pyramid Bed Bug Guard Double Bedsheet & Pillow Case is impregnated with Permethrin and is designed to go under your sheet or sleeping bag to protect from all bed loving creepy crawlies! Ideal for the young gap year students who are moving from hostel to hostel.These specially-treated fine-mesh bed covers fit snugly over mattresses and pillows to protect against crawling or biting insects.Product Specifications:Double size: 150cm (wide) x 200cm (length)Colour: WhiteThe covers are treated with Zi Technology which kills bugs on contact. The net can even be used to kill any remaining bugs on previously infected mattresses. Lightweight and supplied in a drawstring bag.Folds down into a small sack so can easily be transported in a rucksack or small bag.How to Use:Remove the sheet and pillowcases from the bed.Place the bed Bug Sheet and Pillocases over the mattress and pillow and replace the bedding.