body: 4 oz.yd² / 233 gsm, 100%  polyester with reflective print and water resistant finish; trim: 100% polyester oxford at top and back panels; UTK Hydropel? helps to keep contents dry in wet conditions; tote design converts into backpack with stowable straps; zippered main compartment with reflective toggle; laptop compartment fits most 17" laptops; inside zippered security pocket; large front and back pockets with hook and loop closure; mesh water bottle pocket on left side; wide webbing ergonomic tote handles; dimensions: 14" x 5" x 16 3/8";