Made from soft material,it is lightweight and convenient. Wide and adjustable straps prevent the bag cutting into your back/shoulder to ensure comfortable wearing experience.It is a good companion for outings, cycling, walking, shopping,traveling.Both small dogs and medium pets are available.Size details:S: 117,suited pet bust under 11.8, weight up to 5.51lbM:12.57.8,suited pet bust under 9.4-17, weight up to 5.51lb-7.71lbL:159,suited pet bust under 14-19.6, weight up to 7.71lb-14.33lbXL:169.4,suited pet bust under 16.9-24.8, weight up to 14.33lb-20.94lbNote:Please make sure to measure your dog for accurate sizing before purchasing to ensure the perfect fit.The actual color of the item may slightly vary from the pictures due to the light and different monitors.Because of the different measurement methods, there may be 1-2cm of the allowable range error.