These cleaning brushes make it easy to clean the inside of hollow products. The "thinner" size has bristles that are thinner in diameter - perfect for our tubing straws and Lip Bloks (which come with the Bear Bottle and Cip-Kup). The "thicker" size has bristles that are thicker in diameter - perfect for cleaning the Bite Tube Tip, Bite Tube handheld chews, inside the hollow stem of the hollow Grabber and hollow Goshabunga Grabber chews, and inside other hollow CalmNest chews. Each brush sold individually. Made in USA. Product Details Brand: CalmNest Category: Z-Vibe

Use this product as part of a thoughtful sensory support routine. Always choose the correct size, style, and toughness level for the user, and replace the product at the first sign of wear.