The Hip BoneS Connected To The Back Bone. The Back BoneS Connected To The Neck Bone. The Neck BoneS Connected To The Head Bone. But We Can Only Tell You What The Head BoneS Connected To On This Ball Hammock Pouch Underwear With Fly If YouRe Over 18.Softest Fabric Around Luxury 95% Micromodal, 5% Spandex Is Moisture Wicking And Breathable.All Modal Is Not Equal. Our Proprietary Knitting Process Gives You A More Sumptuous Modal Per Square Inch For A Softer, Better Fitting, And More Durable Product Than The Competition.How It Fits Perfectly, With An Even And Lightly Compressive Fit Through The Legs To Prevent Ride Up, Plus Extra Space And Support For The Twins. If YouRe Between Sizes Or Want More Support, We Recommend Sizing Down.Measurements 6 Inseam (15 Cm)More Features Quick-Access Fly, Anti-Ride Up Legs, Tagless, Silky-Soft Waistbandsize Chart:S Pants Size: 28-31 / Waist (In): 27-30 / Hips (In): 33-36M Pants Size: 32-35 / Waist (In): 31-34 / Hips (In): 37-40L Pants Size: 36-39 / Waist (In): 35-38 / Hips (In): 41-44Xl Pants Size: 40-44 / Waist (In): 39-43 / Hips (In): 45-482Xl Pants Size: 45-49 / Waist (In): 44-48 / Hips (In): 49-52