Core Ballstretcher Best Feature Is The Outer Ribs For Super Long Springy-Stretch It Stays Taller On Your Sack With More Padded Grip In The Middle For A Fatty Bag-Squeeze. Core Fits Your Nuts With A Smooth Hourglass Inner Sleeve On Your Nutbag... This Slick Tunnel Wraps Your Sack With A Medium Firm Squeese While The Outer Ribs Keep Your Stretched Down For Real Low-Hangers. Made With Extra-Soft Plus-Silicone Blend, Itll Keep The Grip Enough With A Smooth Velvety Rubbery Comforable Stretch, And The Right Slippery Grip For More Play. Core Ballstretcher Has More Squeeze Insid Core Has Springy Ridges Outside For More Push-Down Hourglass Inner Shape Grips More When You Need Thicker Rubber Rim Will Not Dig Into Sack Measurements: Length: 2 (5 Cm) Width: 2 (5 Cm) Outer Circumference: 7 (18 Cm)