The Fidlock Twist 600 Bottle and Bike Base replace the traditional cage with a magnetic and mechanical latch system. A strong magnet pulls the bottle into place, and a mechanical latch holds it there until a twist releases it. The updated 600 bottle uses a softer material than the original, so it squeezes easier when reaching for water mid-ride. What Our Gearhead(R) Experts Are Saying:"I've taken this through washboard gravel and root-strewn singletrack without a single rattle or drop. Standing sprints on chunky climbs haven't budged it either."