i look at it after i have tied the end up just to see how much is in it but the last few months i was with my ex we stoped useing them cause she was on the pill and it was great i loved it i dont mind useing rubbers but it is great with out and we would go on for ages i gave her 6 loads in 1 night both pussy and butt and its good to see a job well done and to see her hobble to the shower trying not to spill any on the floor