The silver lining is intended to reduce the amount of Ultra Violet getting through the canopy. One slight drawback of this approach however is that some UV can sometimes be reflected from the ground (depending on the surface) and then again from the reflective interior of the umbrella onto one's head and face. The parabolic shape of the umbrella can actually have the effect of concentrating the UV rays onto ones face. To combat this we have inverted the conventional UV protective design so that the silver is on the outside and the black on the inside. This maintains the benefit of filtering out much of the UV strength and reflecting it away from the outer canopy surface. However by having a black interior we are able to stop the sun's harmful rays from being focused on the user's head and face. The Silverback-Golf is manual open, has a large canopy (some 51" in diameter) and is approximately 40" from handle to tip with a lightweight fibre-glass stem and ribs. Umbrella weight 620g.