We recently purchased a second hand TT suit for my 16 year old. It arrived in shabby condition, not as the vendor had described it (TradeMe).

The elastic needed restitching (leg-holes) and there was a tiny hole (about the size of a pea) where it must have been caught on something on one but cheek.

I just hand stitched it together with tiny stitches. He wore it in a TT two days later and it was fine.