There are holes as seen in the pictures because I had pins that I collected when I travelled. You can cover them up with your own or put patches over them or decorate however you’d like. Information from the website: Water-repellent This product contains recycled polyester made from repurposed plastic waste Dimensions: 29cm x 14cm x 46cm(11.4" x 5.5" x 18.1") Volume: 22L Padded shoulder straps with adjustable sternum strap Back panel provides lumbar support and comfort Side pockets fit most water bottles up to 32oz (946ml) Zippered exterior pockets Exterior padded pocket fits a 16" laptop Interior pockets hold the essentials Trolley-compatible sleeve Reflective details Back Strap: 100% Polyester Side Pocket: 81% Recycled Polyester, 19% Elastane Lining: 100% Nylon Body: 100% Recycled Polyester Inner Back Mesh Panel: 100% Recycled Polyester Care Spot clean Do not wash Do not bleach Do not tumble dry Do not iron Do not dry clean Imported