Colors: Blue / Green / Red / Orange 1000 denier construction throughout Dual daisy chains Six compression straps YKK zippers One external pocket Internal mesh pocket Internal hydration pocket and tube exit port 0.06 inch full length frame-sheet provides support. 0.50 inch foam sheet tailored to contour to the natural shape of your back. 0.38 inch EVA Zote® foam shoulder straps won't crease or wrinkle. 0.04 inch HDPE stays in shoulder straps for increased longevity. 0.13 inch high-density top layer laminated to shoulder straps for increased structural support. 0.04 inch molded HDPE frame within the hip-belt yields perfect load transfer to the hips. 0.50 inch foam pads provide long lasting trail comfort. Medium/1860ci Large/2020ci