In Stock. 45 Day Lowest Price - 100% Satisfaction Guarantee. The Cavallaro mouthpiece roll is designed to hold 4 mouthpieces. It is made of a nylon shell with a lamb's wool interior to protect your mouthpieces. Two strap loops are added to the back of the roll for your option to attach the mouthpiece roll to the shoulder strap of your gig bag if you so desire.