Landing site is not visible for others who are not jumping. There is not much difference in weather when you jump. And keep jacket with you if you need it then wear it..
It gets cold before the jump but not during the jump, though if you feel like you really want to wear a jacket make sure it doesn't have laces of too much fabric that can flap with the wind. Also dont wear earings of loose necklaces. People won't be able to see you land but i do advice for you to get your video taken with GoJump. Enjoy the jump!!!
Wear a jacket for sure. It gets cold. I did it in a shorts and it was really cold before the jump. You'll forget the cold when you jump though. It hard for people on the ground to spot when you when you jump.
They can see to from the air when you're close to the ground only part of me that was cold was my ears I had a sweatshirt and short on but then again I'm from the East coast so I'm used to the cold
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