This is how you fill it outdoors
Release the clasp and unfold the Lamzac. Open the ‘mouth’ and drag Lamzac in a straight line through the air, like a flag. Don’t pull it against your body while filling it with air. The easiest way to fill it is to hold it against the wind. This works even better if you get a running start. Seal the straps when you’re done and roll up the closure at least four times. The tighter the Lamzac is rolled up, the better it will hold the air. Bend and close with the belt. Now relax.
How to fill it indoors
Indoors, you’ll need several horizontal sweeps through the air to scoop up enough air. Use the same technique to fill and close it.