This lightweight tank has an open back to keep the air flowing during Sun Salutations on the mat or in the park. Seriously Light™ Luon Our sweat-wicking, four-way stretch Seriously Light™ Luon fabric makes moving a breeze seriously lightweight sweat-wicking four-way stretch cottony-soft LYCRA® Added LYCRA® fibre for great shape retention stretch great shape retention long-lasting comfort Good condition. No rips, tears or stains