Sandbags add resistance and weight. They also provide stability and prevent you from slipping....To perform yoga very well, there are certain poses which can be easily done with the help of these yoga sand bags. For example, these bags add weight for an extra stretch - such as when you place it on your thighs in Virasana (Hero's Pose) or Baddhakonasana (Bound Angle Posture). They bring awareness to a part of your body - such as when you place it on your hip during Supta Padangusthasana (Reclining Big Toe Posture) to help keep your hips flat and level, or placing a sandbag on your stomach during Pranayama (breathing) to bring awareness to the stomach muscles.Thus yoga sand bag is a “must have” prop to perform yoga poses with ease. Every dedicated yoga practitioner must have these bags.