About Cork Yoga Blocks UK Cork Yoga Blocks UK is an excellent technique to expand your reach, provide support, lift, or ground your practice. They are a versatile prop that can be used with a variety of yoga postures such as Parivrtta parsvakonasana (Revolved Side Angle), Parivrtta trikonasana (Revolved Triangle), Adho mukha svanasana (Downward Facing Dog), and many more; we wouldn't be caught without a pair in our kit bag! Heavy Density Eva: Yoga brick offers great durability. Non-toxic and eco