Thermal Shielding Aluminum has excellent thermal conductivity- it will absorb and dissipate thermal energy rapidly. The aluminum will absorb thermal energy and transfer it to the atmosphere, leaving yourself nice and cool. Aluminum is also reflective, which reduces how quickly light can heat it up.
Mounting Aluminum sheet has good elasticity- it will spring back to its original shape even after some large deformation. The aluminum can be "opened" up to fit yourself then it will "close" up with its elasticity- no need for strings or straps!
Power shear and bend it !