AccuFine Comfort air Solitaires, with over 20 Comfort Fit elements blended with 40 air channels to create the most comfortable breathable inner shank ring design. This innovative designing and manufacturing of each ring provides ultra comfort in the interior of the shank. Each ring is individually manufactured. Center Gem of any size, shape and cut can be customized. Please send us a request and we will forward the pictures of your specially designed Solitaires.