These guides are great for training weaves, however I've had 2 of the "ribbons" break on me and have others that have deformed. I believe the plastic guides may be heat intolerant and must be kept out of the sun after use. I've contacted Customer Service so hopefully I will be able to get replacement parts. Update: I did contact Clean Run and they immediately responded and send replacement parts. I am very pleased with the customer service I have received on this product and in the past with another product issue. Thank you Clean Run.