On and off the field, you will need a caster that is ready for all types of terrains & weather. These products below are some our most popular choices that high school & college marching/symphonic bands use. This list will primarily consist of pneumatic, flat-free & thermoplastic casters. Wider caster wheel treads will make it easier to move objects on the actual field. Pneumatic (air) caster wheels provide cushion & will assist with getting over bumps. Our flat-free caster wheels are not as cushioned as our pneumatic (air) caster wheels but avoid the problem of possibly losing air. Our thermoplastic rubber casters are cushioned but solid & provides a smooth ride. Thermoplastic rubber is very durable while protecting the floors they roll on. Great for outdoor uses such as marching band & indoor uses that protects the stages & basketball courts.