The 1.0 version, which is the OriginalBottleKeeper®, is lined with neoprene for insulation, the base is padded to keep your bottle safe when you drop it and the cap has a seal on the inside of it, so you can seal the beer bottle and protect it from accidental spills. There are extra threads on the cap, which gives you a range of beer bottles.
The 2.0 offers three new features. It’s still lined with neoprene and has the padded base, as well as the seal inside the bottle cap. But the one most noticeable difference is that the outside is powder coated, which offer more durability. The second difference is the tether, which keeps the cap attached to your BottleKeeper® and eliminates the risk of losing it. The third and probably most advantageous adjustment is the bottle opener on the top. While the cap has the same height variances as the old one as well as the seal inside, it now has a bottle opener built into it.