Snappi® fasteners need to be used correctly in order to work effectively.
1. STRETCH the Snappi® fastener before its first use. The stretching triggers the 'memory' of the Snappi® to return to its original size and in so doing, pulls the diaper together to the middle to allow for a snug fit. This is essential for the Snappi® to work properly. This can be done by holding the Snappi® in the center with one hand and close to the end of the leg (not by the rings) with the other hand and s-t-r-e-t-c-h a few times (10 or so). As you do this you should feel how the material 'softens' or gets more elastic. Follow this stretching procedure with each leg. The Snappi® is then ready to go!
2. Make sure that your Snappi® is ATTACHED SECURELY. It is important that the Snappi® 'leg' being attached be stretched across the diaper before hooking it into the diaper. So,
Hook Left, Stretch ACROSS and Hook Right, Stretch DOWN and Hook Center
In other words, the Snappi® fastener should go from a ‘T’ shape to a ‘Y’ shape.
By following these instructions, the Snappi® should be secure, the diaper will fit snugly and the baby should not be able to undo it. ALWAYS place a cover over the diaper and Snappi® fastener.