Forestpaw Tactical Dog Vest Harness,Service Dog Vest with Backpack for Medium Large Dogs 2 Colors available:Brown Black Harness Size: Size M: Chest 19.5-41.5"(50-105cm);Neck 19.5-35.5"(50-90cm);Belly 19.5-41.5"(50-105cm);Back 12.0"(30cm);Weight 1.1lb(505g) Size L: Chest 21.5-45.0"(55-115cm);Neck 19.5-35.0"(50-100cm);Belly 21.5-45.0"(55-115cm);Back 14.0"(36cm);Weight 1.2lb(530g) Patch Size: Length 3.0"(8cm); Width 2.0"(5cm) Bag Size: Length 6.0"(15cm); Width 1.5"(3.8cm); Height 6.0"(15cm);Weight 75g Keyword Features: Well constructed---The tactical harness is made of durable nylon fabric with mesh form inside,Pouches are made of nylon material;Patches is Reflective; All stitching lines are strengthened The molle system on two sides of harness is useful for attaching the 2 pouches and sticking patches; The chest and belly part are in same piece to better protect dog's delicate belly and support dog weight; Package Includes: Forestpaw Dog Harness*1 Backpack*2 Flag Sticking Patch*3 Suitable for multiple occasions: Daily use,walking,camping,hiking,training or other outdoor mission.Wearing it,your pet will receive many compliments and praise.