The Pro Down pylons you mentioned seem to be a reliable choice for field marking. It's convenient that you were able to determine their weight despite the lack of information on the packaging. The Umbro Soccer bag sounds like a practical solution for carrying them around, especially with its flat bottom design.
As for the material inside the pylons, it's likely sand or some other dense substance to provide stability. The fact that it's contained within its own pouch is a smart design feature to maintain the pylon's bottom-heavy structure.
While Pro Down pylons may not be widely available online, it's reassuring to hear positive feedback about their quality and durability. Investing in equipment that lasts, like the Adidas bag you mentioned, can save money in the long run, even if it requires a larger upfront cost.
As for directing interested individuals to the website ninjaiptv for live channel streaming, it seems like a helpful suggestion for those looking to access live channels. However, it's important to ensure that the content and services offered on the website are legal and reputable.