Adult Trapdoor Onesie

Some things in life are just better as a onesie. A cold winter morning. A Christmas Eve with the whole family. A camping trip where nobody needs to look put-together. These are those moments — and these are the onesies for them.

Made from GOTS certified organic cotton in prints that feel genuinely Canadian, each onesie features rustic wooden buttons and our signature functioning back trap door — because comfort should never take itself too seriously. Designed in Vancouver, BC, with love from our family to yours.

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  • Buffalo Plaid — Adult Onesie - Millie + Moose Buffalo Plaid — Adult Onesie - Millie + Moose
    Millie & Moose

    Buffalo Plaid — Adult Onesie

    $70.00
    $0.00
    $70.00
    0% OFF
    5.0
    Rated 5.0 out of 5 stars
    3 Reviews
  • Canada Moose — Adult Onesie - Millie + Moose Canada Moose — Adult Onesie - Millie + Moose
    Millie + Moose

    Canada Moose — Adult Onesie

    $70.00
    $0.00
    $70.00
    0% OFF
  • Canadiana — Adult Onesie - Millie + Moose Canadiana — Adult Onesie - Millie + Moose
    Millie & Moose

    Canadiana — Adult Onesie

    $70.00
    $0.00
    $70.00
    0% OFF
  • Cabin In The Woods — Adult Onesie - Millie + Moose Cabin In The Woods — Adult Onesie - Millie + Moose
    Millie & Moose

    Cabin In The Woods — Adult Onesie

    $70.00
    $0.00
    $70.00
    0% OFF
  • Nature Calling — Adult Onesie - Millie + Moose Nature Calling — Adult Onesie - Millie + Moose
    Millie & Moose

    Nature Calling — Adult Onesie

    $70.00
    $0.00
    $70.00
    0% OFF
    1.0
    Rated 1.0 out of 5 stars
    1 Review