The WEIGHTED CALM™ insert in the Weighted Calming Vest provides gentle pressure and evenly distributes the weight on the dog’s shoulders to help create a calmer emotional state. Inspired by human weighted blankets, the gentle pressure resembles being hugged or pet to help dogs feel calm and at ease. - WEIGHTED CALM™ insert is made with non-toxic microbeads - WEIGHTED CALM™ insert is designed to be up to 3% of your dog’s body weight to comfortably sit across their shoulders - Velcro closure for a snug fit