Click to expand Tap to zoom Water Marbles Test Tube by Heebie Jeebies Science Kits Sale SKU HJ-1307 24 48 72 96 120 144 168 192 216 10+ Quantity Quantity Add to cart This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. Please order in complete units of 24.Just add water! These ultra-sensory polymer balls absorb and expand 100x their size in water
