I'm afraid we do not provide equipment rental at the moment.
Although, the thermal suits are great at providing an additional layer of warmth, they are not absolutely necessary and many of our guests do go without them.
On our Northern Lights big bus chase, we always keep the bus warm so you can warm up in the car whenever you need to. Being sufficiently dressed in woolen layers and good down jacket will also help you stay warm.
For your clothes, we would recommend bringing water resistant and wind proof outer layers, woolen socks and woolen underwear, preferably merino wool. For your shoes, we would advise that you wear shoes that are waterproof, well insulated and something that allows you to wear extra layers of woolen socks in if it gets colder.
We would also recommend bringing along some heat packs, a hat, a scarf and mitten to keep yourself warm.