Mack Tuff Adjustable Silicone Penis Tie Ring - Clear - Male Erection Enhancer Supremely versatile with its completely adjustable, fantastically manageable design, the Mack Tuff Adjustable Penis Tie in premium silicone can be worn however desire dictates- from simple base-of-the-penis constraint to penis and ball constriction, even as a testicle-tugging ball stretcher. Opening up wide via sturdy plastic hardware to fit around any size, the Mack closes as loosely or snugly as needed. In skin-safe, ultra durable and pleasurably temperature-receptive silicone, this Tie cleans quickly and easily in warm soapy water or with a good toy cleansing fluid- always choose a great quality water based lube to enjoy in combination, silicone based formulas should be avoided, as should contact with other silicone toys and products.