... and breathable 3, harmless, reusable Polyolefin gel and Silicone gel:1, the polyolefin gel can be used more than ... silicone gel just a few of times.2, the polyolefin gel can be kept more than 3 years, ... gel just 6 month or 12 month.3, the polyolefin more paster than silicone ♥♥ our invisible bra use ... . our factory is the first one to use the polyolefin gel factory in China . so , The sizing process ...