Hot off the sewing machine, made for specifically Kate’s Guinea Pigs, Milly & Molly, is the Snuggle Tunnel.
This one is 26 inches long which is approx. twice as long as a Snuggle Sac (see photos below). They can be made shorter or longer depending on your specifications.
As the name suggests, it is open at both ends, so piggies can play running through or take a break and sleep in there too. In keeping with all of the Cosy Cavy Cagewear, it is fully reversable, and has no open seams.
This could also be made with a middle supporting arch if required. Other options could be to add suspending ties, which would make it ideal for ferrets who like to be off the ground, and rats would probably be quite taken by it too!
This one has been made in Purple Haze cotton with Lime Green Fleece.