Let me start by saying these Momcozy breast therapy packs have been a game-changer during my breastfeeding journey. The larger design truly provides full coverage, unlike other brands I've tried where the cold or heat barely reaches where you need it most.

The cooling relief after nursing sessions is incredible - just pop them in the freezer for 4 hours and that refreshing sensation helps so much with engorgement. I especially love using them during night feedings when everything feels more intense.

For warmth, they're fantastic at stimulating milk flow before pumping. I typically heat them in boiling water (about 2 minutes) rather than microwaving after reading other reviews about potential leaks. They maintain warmth perfectly throughout my 20-minute pumping sessions at work.

What stands out:
- The thin sleeves allow for better temperature transfer than fleece-covered alternatives
- Gel stays cold/warm longer than bead-filled versions
- Perfect size to fit around pump flanges
- Comes with two covers which is super convenient

A few cautions:
- Microwave use seems risky based on multiple reviews (including my own trial)
- They can get VERY hot - always use the covers or test temperature first
- Quality control might be inconsistent as some report leaks

Despite these minor issues, I'd still wholeheartedly recommend them to any breastfeeding mom. Just maybe buy from somewhere with a good return policy in case you get a faulty pair. When they work properly (which is most of the time), they're absolutely worth every penny for the relief they provide.