This rose collars is white, corrugated plastic collars snap around base of rose bush, making a collar 9-inch high by 12-inch diameter. Fill collar with mulch to protect delicate hybrid rose grafts from freezing. White collar and open top reflect sun and stop heat build up to prevent premature sprouting in the spring. Easy to remove and store flat they will last for years. Three collars in a colorful display package. Measures 9-inch by 12-inch.