Check out our Drinking Tube & Adapter For BeFree here: null This hack allows you to attach a drinking tube to your BeFree filter by combining a Sawyer Inline Adaptor and a modified Platypus Drinking Tube. Simply cut the end of the drinking tube just above the bottle attachment and slide the end of the tube over the blue section of the Sawyer Adaptor. The Sawyer Inline Adaptor will now attach to your BeFree filter. Subscribe : http://bit.ly/2k7jxTp Follow us : https://www.instagram.com/zpacks/ https://twitter.com/ZPacksLLC https://www.facebook.com/ZPacks/ For all of your ultralight Backpacking needs visit us at : www.zpacks.com