prAna Women's Size Chart The Glenna Tank is a lightweight, scoop neck layering tank. It has a slight high-low hem and novelty back strap details. The Glenna is made from an organic cotton/Lenzing Tencel(R) lyocell blend. Features: - Lightweight organic cotton/lyocell slub blend jersey - Scoopneck layering tank - Novelty back strap detail - Slight high low hem - Standard fit - 50% Organic Cotton / 50% Lenzing Tencel (R) lyocell