These are eleven pairs (22 each in the set) of transparent laser cut acrylic obstacles used for my game Electronic Gladiators. These are available in four colors currently; Amber, Purple, Dark Blue, and Light Blue. The various shapes can be configured within the Arena board as you wish, with some I have uploaded as examples to be used, using all or as many as you wish, but always mirrored on each side to create an even playing field that challenges the combatants to move using them for cover or create traps.