Professionally constructed, 13/16 in. deep frames are crafted from kiln-dried solid wood stretcher bars and rigorously tested for warp resistance. The 100%, 16.4-oz. linen canvas has a pigment-rich gesso primer that makes the acid-free, European archival cloths beautifully responsive to every brush stroke. Balanced absorbency and tooth gives improved adhesion and uncompromised color vitality. Each one is flawlessly finished, with back stapling and folded, uncut corners for extra cloth if needed. Innovative pro-stretcher™ makes achieving the perfect tension easy. Strong and compact, pro-stretcher™ allows you to create an immaculate bespoke surface, stretched exactly as you want it.