Our Crate Mats can be used alone or inside a crate or cage. Made of super strong and durable chew resistant polyester ripstop fabric Double-stitched seams and reinforced corners strengthen weak spots Sized to fit most crates. Choose from the following sizes: X-Small measures 17"L x 11"W Small measures 23"L x 16"W Medium measures 29"L x 18"W Medium/Large measures 35"L x 22"W Large measures 41"L x 27"W X-Large measures 47"L x 29"W Additional Details ------------------------------ Product description: Our Crate Mats can be used alone or inside a crate or cage. Made of super strong and durable chew resistant polyester ripstop fabric Double-stitched seams and reinforced corners strengthen weak spots Sized to fit most crates. Choose from the following sizes: X-Small measures 17"L x 11"W Small measures 23"L x 16"W Medium measures 29"L x 18"W Medium/Large measures 35"L x 22"W Large measures 41"L x 27"W X-Large measures 47"L x 29"W Directions: There is no such thing as "Chew Proof" Please Note: These beds are not returnable for a refund if you allow your dog to damage them. Please read and follow the instructions below in order to prevent your dog from damaging these chew resistant beds. While these items are designed to resist damage from aggressive chewers, some dogs can destroy anything if left to their own devices. Professionals all state that a dog should be closely observed with any new item introduced in to their world to prevent damage to the item and/or injury to the Dog. Please be sure to NEVER leave an aggressive chewer alone with any new item at all until you are absolutely positive they understand that they are not allowed to chew it if you do not want them to chew the new "Thing" in their world. Also, it's best to give a dog something they are allowed to chew and teach them the difference between the two. They want to learn from you. Teach your dogs well :-)