The 237D has 33 pockets and compartments, the patented Personal Area Network (PAN), DCC+, and tons of features including magnetic closures on the pockets and windflap, battery holders, detachable key chain, bottle holder, secret pocket, eyeglass chamois and more.
You can order the jacket online for about 75$ – it would make a great addition to your solar-powered backpack.
Thanks Chris!