Mmmm.....had to throw a bucket of cold water over our swags they have been breeding in the shed, have 7 of them in the shed and only 4 ppl in the family.
Don't use a swag on the bike, ours are in swag bags on the roof of the 4x4.
The first four are Burke & Wills all with 70mm mattress;
Mine is a XL Redgum 1150 wide, lots of mesh all round and use a Darche -12 XL sleeping bag
Wife's (if not snuggled into my XL with me) Ironbark (purple) with a -10 outer limits bag
Daughter, Ironbark (pink) with -10 outer limits bag
Son, Coolabah with half mesh and -10 black wolf bag
And cotton sheets in all for summer camping
Our old swags used for loaners or when extras needed are made here locally and are similar to the Saul Swag.......2 singles and a double all in 14oz ripstop canvas with 50mm mattress.
My swag purchase advise would be if your after quality to last for many years, go with Australian made canvas swag in either dome or able to suspend the canvas of you so to shed water of the canvas.....consider where your going to use the swag, the further North you go the more mesh you need.
If your after a budget but quality lighter swag the Mitchell by oztrail has a great reputation on 4x4 forums.
Cheers