Our Orthopedic dog beds are made to the same sizes as our crate mats as a standard but can be custom made to different sizes.
They come as an Indoor or Outdoor bed with Zippable covers that you can change as needed.  Or you can get an Outdoor one and put an indoor cover on it so the cover can be easily washed and you still have a functional bed.  With a variety of cover options you can change covers with your mood and season.  Our Beds and Mats and covers are designed to be interchangable.
 
The outdoor is made from a sturdy yet pliable waterproof canvas whilst the indoor is made from soft duck canvas and sherpa top.
 
Zips are YKK.
 
Inside we have a sturdy dense foam base with VG40-50 Visco-Gel Slow-Release Memory Foam Top and Dacron surface Liner.
This gel infused visco-elastic foam is very high density with very soft low resilience. It is a slow recovery non-load bearing foam that moulds itself to the contours of the body. It is temperature sensitive and pressure-relieving commonly used for the creation of special surface cushioning.