The Yoga Mad 369 yoga block is designed to ensure optimal alignment, added stability & deeper poses. Produced from high quality, scratch resistant & wipe clean EVA foam, the block is lightweight & durable & lets you gain more strength & feel confident when performing challenging yoga asanas. In addition, it can be used as a pair for more security when doing a dog pose (Adho mukha svanasana) & supports your knees in an easy pose (Sukhasana).