How To Play Packed Up

About Packed Up!, from BoardGameGeek:

Winning is simple: Compete to make your "pack" of four cards - each with a differently weighted camping item - weigh less than anyone else's! But, there's a twist: with fast hands, strategic thinking, you can make your opponents carry the heavy stuff! How to play: Draw four random item cards to form your "pack." Weights vary! Draw a card - either swap it into your pack or play its action to mess with opponents. Think you've got the lightest pack? Call “Packed Up!” to end the round - flip all cards and compare! From the adorable miniature backpack carrying case to the beautifully illustrated cards, every component is crafted to elevate your gameplay experience. -description from the publisher