The InControl brand have two options, the Elite Hybrid product is a night-time and thus is thicker and larger capacity, it also has a hook and loop fastening system.  They have a capacity of around 5217ml

If you are looking for a more discreet product for use during the day the InControl Essentials would be your product. These are great because they make little noise, and have 4 strong sticky tapes.  They have a capacity of around 3700ml