Insect Shield Insect Repellent Dog Pet Cot Ideal for outdoor use to effectively protect pets from harmful biting insects Easy to assemble (no tools required), and folds flat for easy storage Medium measures 27_""L x 23_""W x 11_""H and holds pets up to 27 lbs Large measures 35_""L x 27_""W x 11_""H and holds pets up to 40 lbs" Veterinarian approved by Dr. Katy