Reach for new heights of penetrative pleasure as you experiment with the twin canals of TENGA's Double Hole Onacup. A super-tight 'Bitter Side' features nubs that tighten around the penis while the 'Sweet Side' has nubs that softly cling to your shaft. Slip inside the air-cushioned chambers to enjoy pillow-soft twisting sensations and atypical orgasmic stimulation. Switch between the 2 distinctive canals to dial up play and push yourself to a eye-rolling climax. All TENGAs are lubricated inside. The lubrication consists of: purified water, glycerin, sodium polyacrylate, phenoxy ethanol, and paraben (allergy tested in Japan). Please note: this product is designed to be used only once. Use condoms to extend usage.