In reply to NikLong:
Hi Nik,
You want a snug close fit, you don’t want your feet sliding around inside the shoe when your trying to apply force through small footholds. I would stick with your pair for a at least a month if your climbing a couple of times a week.
If the shoe uppers are made from leather then it should stretch somewhat and begin to mould to the shape of your feet and feel more natural. Synthetic fabric shoes do also stretch but less so in experience.
Try wearing the shoes around the house to break them in a bit.