Shopping cart

  • No products in the cart.
SPEND $100, GET $10 OFF / Free Shipping on orders over $50
Zip Coupling
Technical Features

Zip Coupling

Down and synthetic bags identified with our zip coupling symbol use a 65 inch #5 YKK full-length zip which allows a unisex left-handed and women's specific right-handed bag to pair together.

Designed to pair side by side, each person sleeps in their own bag enabling each of you to take advantage of your bag's unique insulation zones, hood and footbox features - perfect for cozy adventures for two.

Bags with full-length #5 YKK zips on both sides can also be coupled together with other pairing bags.

2 thoughts on “Zip Coupling

  1. avatar Baz says:

    G’Day Per,

    Thanks for your question. Any of the following Unisex sleeping bags: Ascent, Trek, Traverse can be coupled to any of the following Women’s sleeping bags: Altitude, Journey, Venture. To couple the zippers, simply follow these steps:

    1. Unzip the side zippers of the unisex and women’s bags by sliding the zipper slider from the top all the way to the bottom of the zipper. You will not need to unzip the secondary zipper which runs through the footbox.
    2. While ensuring that both zipper sliders are pushed together, pull on one side of the zipper (as you would with the separable zipper of a jacket) to separate the zipper: one side of the zipper track will have the two zipper sliders on it, the other side of the zipper track ends in what is known as a ‘pin’.
    3. Lay the two sleeping bags side by side. Insert the pin of the women’s sleeping bag into the two zipper sliders of the unisex sleeping bag. Insert the pin of the unisex sleeping bag into the two zipper sliders of the women’s sleeping bag.
    4. You will now be able to slide the upper zipper sliders up to the tops of the zippers; the bags will be joined together.

    Sorry we don’t currently have any ‘how to’ videos showing this – it’s something we’re currently working on.

    If you have a pre-2019 Sea to Summit sleeping bag or bags, it may still be possible to zip the two of them together – shoot us an email at and we’ll provide additional details.


    The Sea to Summit Team

  2. avatar Per Andersson says:

    How do you disconnect the Zippers in your own sleeping bag in order to couple the Zippers with your partner’s bag? We can’t find any instruction videos for zip coupling.

Leave a Reply

Your email address will not be published. Required fields are marked *

Scroll To TopScroll To Top