Fits under the seat at 17×11×10", then unzips into a 17×11×20" apartment once you're at the gate or in the hotel room. One bag for the whole trip.
Trip-tested details
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Meets under-seat limits for most major U.S. carriers in its collapsed profile
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Two-side expansion nearly doubles floor space for stretching and turning around
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Removable wheeled base — roll through the terminal, then lift it off and carry by shoulder strap
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Mesh on four panels for genuine cross-ventilation, plus a fleece pad that washes flat
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Internal safety tether clips to the harness so nobody bolts at security
Suitable for pets up to 20 lbs. Always confirm dimensions with your specific airline before flying.