Do i need a mailing slip for ziffit

According to Ziffit's website and customer service, you don't necessarily need a mailing slip to send in your items for trade-in or sale. Here's what they say:

However, it's always a good idea to check with Ziffit's customer service before sending in your items to confirm their shipping requirements and any specific packaging or labeling instructions they may have.

Additionally, if you're sending in a large number of items or have any concerns about shipping, you may want to consider using a trackable shipping method to ensure your items arrive safely and securely at Ziffit's warehouse.