The Invitation is a recreational sailboat, built predominantly of fibreglass, with wood trim. It has a catboat rig with aluminum spars and a loose-footed mainsail. The hull has built-in foam for buoyancy. The sail is without sail battens, is installed over the two-piece mast with a sewn-in sleeve and can be wrapped around the mast. The hull has an enclosed foredeck, a spooned raked stem, a vertical transom, a wooden, kick-up, transom-hung rudder controlled by a tiller with a hiking stick and a retractable wooden daggerboard. The hull alone displaces .
