Using these Casey cotton fitted sheets is a breeze. Just place the sheet on your half - queen bed with the 40cm depth, align it properly with the help of the tags, and tuck it in. When it comes to washing, you can use a regular cycle in your washing machine with mild detergent. Avoid using bleach as it may damage the fabric. For drying, tumble dry on low heat to maintain the softness and durability of the sheets. After drying, you can iron them on a low - heat setting if needed. With proper care, these sheets will serve you well for a long time.