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Usage Method: 1. Prep & Lubrication Rinse inner/outer surfaces with warm water before first use . Apply water-based lubricant generously at the entrance and inside the tunnel for smooth insertion. Optional: Use the air expulsion method for enhanced suction. 2. Position & Motion Control Hold the cup firmly and adjust angles. Gradually increase thrusting speed while maintaining rhythmic pressure on the textured sleeve to mimic realistic sensations . Avoid over-twisting to prevent material tearing. 3. Post-Use Care Immediately rinse the tunnel under running water, gently scrub with mild soap , and pat dry with a microfiber cloth . Use an absorbent stick to remove moisture from the channel, then apply renewal powder externally to prevent stickiness. Store in a ventilated case away from sunlight . Precautions: 1. Keep out of reach of children to prevent accidental ingestion. 2. If you feel unwell, stop using immediately. 3. Do not use on damaged or swollen skin. 4. Store in a cool and dry place. Comments: 1. Manual measurement tolerance is 2 to 5 grams. Please do not mind. 2. Due to differences between various displays, the color of the picture may not accurately reflect the actual color of the product. Please refer to the actual item. Thank you very much! Package Includes: 1* Masturbation Cup