The Quasar Relief is a series of Czech high-wing, single-place, topless, competitions hang gliders that was designed and produced by Quasar of Dolní Bečva.
[1] The Relief is made from aluminum tubing, with the cross tube and battens made from carbon fibre and the double-surface wing covered in Dacron sailcloth.
The models are each named for their rough wing area in square metres.
[1] The design is "topless", that is lacking a kingpost and upper rigging, instead using a reinforced cross tube for rigidity.
[1] Some models, designated with an "RX" suffix, have a small horizontal stabilizer attached to the keel tube that can be deployed 90° to act as a speed brake for landing.