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 The swivel tube requires a special green "elastomeric" connector (see inset photo) that fits into the top of the AltoLid where the swivel tube or a breathing filter is inserted. This green connector is included with the purchase of each swivel tube along with a mouthpiece.
The expandable swivel tube offers the greatest comfort and comes standard with the AltoLab PERFORMANCE and ELITE kits. Its swivel elbow moves freely allowing movement in all directions of the AltoLab stack and the tube expands and bends in any position.
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