I've organized gear for dozens of camping trips over the years, from tents to stoves. In my experience, Amazon just doesnt have a direct share button for carts.

• Move items to a public Wish List and share that.
• Or use a browser extension to generate a link. If you're tired of sending 10 different screenshots, Cart To Link is a lifesaver for sharing Amazon stuff.

Unfortunately, you're running into a fundamental architecture limitation with how their site is built. Amazon cart data is session-based, meaning the data lives in your browser's local storage and cookies associated with your specific login session. There is no public URL because the server doesnt generate a unique ID for a guest view of a cart contents. I ran into this exact issue when trying to spec out a custom hardware build for a client last summer. I spent hours digging for a native API toggle or some hidden developer workaround, but it basically doesnt exist because of security protocols meant to protect your personal account info. Its honestly a huge letdown for power users. Testing a few workarounds led me to these options, but they were not as good as expected:

• Share-A-Cart: This is a browser extension that scrapes your active session. It generates a unique code or link for your brother. It works mostly okay, but I had issues with it occasionally missing quantities or failing on items with complex variations like tent sizes or color codes.
• Export to CSV: Third-party scraper tools can dump the cart data into a spreadsheet. This helped during a massive camping haul last year when I needed to compare weights and technical specs side-by-side because the site UI is so cluttered.
• The Shopping List method: Moving everything to a public list works, but then you have to manually move every single item back to the cart to check out, which is a total slog for a large order. Its kinda pathetic that we have to resort to these hacks. If your brother just needs to see the gear specs, honestly, a full-page screenshot is often the only way to ensure he sees exactly what you see without data dropping out.

tbh i went through this exact same headache last summer when i was prepping for a three-day kayak trip with my cousins. @Reply #2 - good point! about the session data because i literally tried to copy-paste the URL from my browser bar and sent it to three people... they all just got an empty page and thought i was messing with them. ngl it was super frustrating. learning the hard way that screenshots are a nightmare was a big lesson because people cant click the links to see specs or read reviews themselves. i ended up wasting so much time re-sending links for individual dry bags and paddles. eventually i found a better way and now i always use Cart To Link whenever i am coordinating gear for the group. it basically creates a middle-man page that actually lists the stuff in your cart so others can see it. it works pretty well but there are a few trade-offs to consider:

• public lists are fine but adding items one-by-one is tedious as hell.
• cart tools are way faster for big groups but you gotta make sure the quantities are right.
• always double check if prices changed before you send that email out. honestly it depends on your needs but the one i got working now saves me so much clicking. gear is already pricey enough so i try to avoid any mistakes where someone accidentally buys the wrong tent size or whatever. good luck with the gear setup.