Could you please tell us what the tog rating is for Bonds Wondercool baby clothing?

As with any other sleep garment (pjs, onsie, nighties) the Bonds Wondercool range does not come with TOG rating as it is a range of clothing/sleepwear not sleep bags.
The Wondercool suit works well in hot weather as they use the skin temperature and sweat to help cool baby through evaporative technology but are safe to use in cooler months too.
Parents can dress their babies in the suits as normal and choose a sleep bag that is appropriate for the room environment/temperature.