While this may work, sometimes the tags get caught between bags. I, personally, would not trust a ziplock for durability.
These tags are smaller. I cut down the paper printable tags into two sections and put each part inside a seperate tag...
My Seattle body has the same problem, and started in SJPP the 2nd week of September last year to beastly temps. But if you start by say 6 you can get in 6 hours of walking by noon, which is grand because the real heat starts to build up after...
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