Clever Pots Hydroballs 16 pack has two handy functions to help plants stay healthy.|When placed inside the included waterproof liner, they'll create a regular water source by acting as a reservoir for plants. Without the waterproof liner they'll help aid drainage and aeration.|The hollow balls work with any pot size or shape, helping to keep plants looking lusher for longer.|Pack of 16|Reusable and recyclable|Assembly Instructions: |Take Clever Pots Hydroball halves|and push them together, until they click and create a ball.|To create a water reservoir and keep your plants hydrated: add all 16 hydroballs in the liner in the plant pot base. Excess water will tip over the liner edge and out of the pot's drainage holes.|To increase soil drainage and aeration, place hydroballs directly in the plant pot base.|Size: 6cm Height x 6cm Width x 6cm Length|Weight: 0.235 kg