G'day Sum,

If you have the rectangular mat you may get away with it, but if you have a tapered ether light I wouldn't recommend it.  The sheet won't fit properly and will have the potential to bunch up and twist around.
Sea to Summit did do a specific sheet for their Hiking mats called a Coolmax fitted sheet, but we haven't had any of those for some time.
The common alternative is actually to use a liner, and slide it over your hiking mat like a sock.

G'day,

It's a bit bigger than the Synmat, but it will work.  You'll just need to adjust it to be slightly tighter.
EXPED do a Synmat & Downmat specific mattress sheet/protector that you can find here, if that's of interest.
Hope that helps!

G'day Kris,

The Fitted Mat Sheet isn't a great fit for the boxed sidewall style mats, like the HexaTherm 3D. They fit to an extent, but it's not an ideal fit, so we wouldn't recommend it.

G'day Natalie,

Unfortunately not, the underside of the sheet has large pockets for the mat to slip into, so there won't be anywhere for the stretcher legs to go. We'd recommend a regular fitted sheet if you're looking for something to go with a stretcher.

G'day Bree,

Yes, the Fitted Mat Sheet - Single will fit on the Coleman Big Sky Regular Mattress. It will be a little bit roomy, but you'll be able to cinch in the sides a little with the bungee cord and toggles.

G'day Lina,

Yes, the Fitted Mat Sheet Single suits the Mega Deluxe Single Mattress.

G'day Dylan,

Yes you'll be able to use the Black Wolf Sheet with your STS mat, however it will be a little too large for the mummy shape, so you might need to just tuck the edges underneath.

G'day John,

Yes the Fitted Mat Sheet - Single will fit well on the EPE Sim Camper F60.

G'day Steve,

The fitted mat sheet can fit over the King Single Monstamat but in order to actually use it some degree of alteration will be required. We'd suggest just using a cotton bed sheet instead.

G'day Dave,

Thanks for getting in touch, we've tried the Fitted Mat Sheet-Single on the Monstamat which is a little larger than the BomberPad so we're confident it will fit the Bomberpad.

G'day Celina,

I've just been and tried this out for you and the Black Wolf Fitted Sheet Single does fit quite nicely on the Zempire Monstamat Camp Mat. 

G'day Eric,

The Blackwolf Fitted Mat Sheet Single will technically fit over the S2S DLX SI LAW SLeeping Mat. However, it's a very tight fit as the mat that it's designed for (Black Wolf Mega Deluxe) has tapered edges, which makes it tricky to get it over the square edges if the S2S Mat.

Update 23/1/19 - Just to clarify, the Fitted Mat Sheet can fit over the Exped Megamat but in order to actually use it some degree of alteration will be required. We'd suggest just using a cotton bed sheet instead.