It's very advisable to get some wrist-straps for your Joy-Con 2s, and if you have extras, you can equip them with this ...

The console is the same thickness as the original Switch (.55 inches). With Joy-Con 2 controllers attached, the Switch 2 stands about 4.5 inches tall x 10.7 inches wide. In terms of weight ...

Switch 1 buyers upgrading to a Switch 2 may also have to budget for some new accessories, from controllers to microSD cards.