1. Please use it AS A TOY but NOT A TOOL walking on water.
2. Please use it at a room temperature to make sure it work well.
3. Always make sure that the product is safe and in good condition before use.
4. Make sure that all safety equipment is tested and found usable before use.
5. Don't use it on river, sea or lake without the safety string attached to a controller

How to repair it?

1. Find out exactly where the leak is. 
   Fill a spray bottle with a mixture of soap and water and spray it liberally on the Roller along the seams. |
   You will notice that the solution starts to bubble up where the leak is located, and then so take note of the position of the hole.
2. Prepare the hole for patching. 
   Dry the seam off and make sure that it is completely deflated before attempting to patch the seam. If you have the patch kit that came with the Roller , you can use the prep solution to thoroughly clean the rubber before proceeding. Rubbing alcohol also works.
3. Apply plumber's goop liberally to the seam and let it dry for about 15minutes. 
   If possible, apply some goop to the inside of the seam as well, so that it spreads out and gives an extra layer of protection when theRoller pressurizes.
4. Fill the Roller about halfway with air and wait another 30minutes or so to make sure that the goop has dried completely.
5. Inflate the water roller completely and spray it again with the soap and water mixture to make sure that the hole is indeed fixed.

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