Calpak | Bags | Calpak Red Backpack With Structured Design 。The Calpak Backpack combines elegance and practicality with its smooth leather-like finish and structured design. Its gold-toned hardware adds a touch of luxury, while the tailored stitching enhances its sophisticated appeal. Perfect for those who value style and functionality in their everyday accessories. I’ve had this for a few years now and just don’t reach for it anymore. It’s in fairly good condition. Theres a water stain in the front pocket and some paint scratches from luggage handles on the back. But otherwise it hasn’t been used much and the leather is still holding its shape like it’s new.