The Canadian Spa Hot Tub Cover is made from the strongest marine-grade vinyl that withstands the harsh winter months and is both UV and mildew resistant. The insulated foam is protected by a 6mm double-coated, heat-sealed polyethene vapour barrier to increase the longevity of the cover and reduce water absorption. With 6 cleverly placed reinforced handles this hot tub cover is perfectly suited to non-inflatable rectangular spas with rounded corners. If your existing cover measures between two of the measurements, always go for the bigger option as this will not affect the insulation. If it is small and sits on the skirting flaps the insulation will be compromised. A full-length steam seal extends the entire length of the fold to minimise heat loss. This strong cover includes eight heavy duty, reinforced locking straps with keys for added child protection and keeping your hot tub water well insulated and clean from debris while it's not in use. Features and Benefits Drainage – Drainage grommets allow for trapped moisture to escape which keeps your cover lightweight. 8 Locking Straps – Eight locking straps secure your cover against strong winds or unwanted access.