The JT SplatMaster Mask/Optix system is specifically made for younger players of the JT SplatMaster system that is a one size fits all and gives the players protection for their eyes while giving a clear range of vision on the field. The basic JT Optix mask needs to be worn when the marker is firing by the shooter and the observers for safety and protection, this is the first rule in paintball and all players know and abide to this! Pick this up and if you are thinking of playing against each other, pick up the Optix Upgrade Kit and get started playing against each other!