G'day,

I've just measured all the stock we have on the shelf, and they are all 18cm in diameter.
Hope that helps.

G'day Granton,

The best way to store a self-inflating mat is unrolled, and with the valve open if you can, however they can be stored rolled in the bag, we'd just recommend getting them out, unrolling and inflating them every month or two to reduce the risk of the internal foam becoming permanently compressed.

G'day Tom,

To honest, we're pretty impressed with both of these mats. The HexaTherm is a little thinner so it will pack down a little smaller and lighter than the Monstamat. The Monstamat tends to be slightly more popular if you're looking to pop two next to each other, as the box style edge makes it easier to abut each other. Overall if I had to pick one I'd go for the HexaTherm, as I've owned one before, I know they're great, and they have a great warranty. 

G'dat Thea,

There are some minor differences between these two mats. The Blackwolf mat is 8.8cm thick, versus the Zempire which is 10cm thick. They are also slightly different dimensions, with the Blackwolf being slightly smaller. The Zempire has a square sidewall, with the Blackwolf having a tapered edge. They will both stay inflated in the same way overnight, with the main differences coming down to dimensions and fabrics.

G'day Alice,

Unfortunately not, the pump sack/storage sacks are not available for separate purchase.

G'day Margherita,

The velcro is on each side of the mattress. Laying on your back, the left-hand side has the furry velcro on the 'up' side of the tab and the right-hand side has the prickly velcro on the 'down' side of the tab.