Twin XL, Twin Extra Long, or Split King (38 x 80" x2) Mattresses in Canada measure (38 x 80") or (97 x 203cm). While manufacturers do their best to follow these measurements there is typically a variance of a 1/2" to a full 1" in some cases. These are important factors when choosing furniture. This size is widely popular at our stores and our online store for couples choosing adjustable beds who want separate mattresses to equal a King Size Mattress. Feel free to contact our experienced and non-commissioned team at Luxurious Beds and Linens for friendly advice when choosing the correct mattress(s) for your needs.