Optimale Stimulator Extension with Ball Strap Clear. The Optimale Stimulator extension is easy to put on, comfortable to wear, and intensifies enjoyment for both yourself and your partner. The soft and stretchy material hugs your shaft tight while the firm head at the opposite end adds a full inch to your length, and stimulating exterior nubs send your partner to new heights of pleasure. An attached ball strap at the base works like a cock ring to make your erection more powerful and long lasting, completing your Optimale experience. Product features: firm head adds one inch to length. Soft pleasure nubs increase stimulation. Stretchy and flexible for extra comfort. Attached ring provides an anchored base. Easy to use and clean. Phthalate free, body safe. Specifications: total length 5.7 inches, insertable, usable length 4.2 inches, width, diameter 1.60 inches. Bulk weight 0.20 pounds. Package weight 0.30 pounds. Material thermoplastic rubber TPR. Video. 18.