Res Caps by Resolution Colorado are a bong essential! If you’ve ever cleaned a bong before you know the headache of covering the openings of the pipe. Res Caps are silicone covers that fit virtually all bongs! With small and large caps in every pack that stretch to fit, there’s no spill risk. To easily clean your bong, just empty out the water, drop in some alcohol and course salt or use Weed Wipes, slide the res caps over the openings and shake, shake, shake!