This puppy bodybag combined with strait-jacket and hood can be made out of 1.2(!!!!)mm latex, what makes it extremely restrictive and escape-proof. Of course, hands must be placed behind the back. No additional ropes or straps are needed, because the existing waist-crotch straps will effectively hold arms in place. Also check this version.
As an idea, imagine this bag combined with pants with hood.
The downside is – self-bondage not possible.