Next week Im going rock climbing with my sister and 2 friends. Its at an indoor centre. Of course we wont be the only ones going, there will probably be another good 15 people there as well. I have a tiny bit of a problem

The harnesses you wear really pull up on you and for boys, you can see a lot of bulge down there! Its like really noticeable, even if your not purposely looking

I dont have a packer

And also my sister and both friends surprisingly enough dont know that I am trans. They still see me as a girl. So for them to see something, even if im just using a sock, there on me would probably make them feel awkward

Especially since my other two friends are actually male.
Most other people in public see me as a normal boy, and there are gonna be lots of hott girls there too

I dont really want it to look like I have nothing down there to them. I dont want to give anything away in both cases!