Flat collars/martingales are the preferred collar to wear during class. Harnesses are dangerous as they may get snagged on the equipment. Agility is an off leash dog sport, so collars become irrelevant as you progress through your training. 6 foot, light leashes are the preferred leash to use during class. We frequently drop our leashes and run with the dogs. Eventually you will train your dog in agility off leash. The lighter the leash, the easier it will be to remove it over time. Flexi-leashes and poop bag holders attached to leashes may scare dogs as they run with the leash dragging behind them. Pinch collars, shock collars and choke chains are not used at our facility.