Bitfinex Now Supports SegWit for Lower BTC Fees & Faster Processing Times

... SegWit is a Bitcoin protocol improvement that facilitates scaling. The SegWit implementation means Bitfinex users can benefit from lower BTC withdrawal fees (approximately 15%) and improved processing times on transactions across the Bitcoin network....
https://medium.com/bitfinex/bitfinex-adopts-segwit-8e6c5d72fcf9