@elizmcc thanks for reaching out to us about your broken zippers on both your sleeping bag and tent - sorry to hear they both gave out around the same time. Often the best course of action for warranty questions is to take both items to your local REI store, where our customer service folks can work with you on next steps. If you don't live close to an REI, you can always call our Customer Service team at 1-800-426-4840. For reference, here's a link to our return policy. Hope this gets you pointed in the right direction!
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