Game field site owners can consider the Valken MI-3 Field Mask for rentals. The Kaiju talks more about it in this video... "A goggle that has it all -- professional features at an entry level price. From its inception, the Annex goggle was intended to take the abuse of any level of play; from the daily rental fleet grind to the occasional weekend battle in the woods. Designed by players, for players--all the features you're looking for at a price that won't break the bank.