Photon Jacket BLACK TWILIGHT PILLARBOX EVERGREEN The Photon Jacket is a weather resistant synthetic insulated jacket ideal for UK conditions. The Photon Jacket is a Rab classic. The Photon is our 'go-to' synthetic insulated jacket for regular use at the crag, after running, for that post ride pint, gardening . . . the Photon Jacket is perfect as an insulated layering piece. Filled with Primaloft® Eco and providing maximum warmth for minimum weight and small pack size. The outer fabric is Microl