Row split in to multiple rows based on cell data

Hello
I need to get my data off an inventory sheet to a oddly formatted second sheet.

I have data on a sheet including item name, item number, item color, and item count base on size (size is broken over multiple columns e.g. small, medium, large)

It need to be on sheet 2 with columns as item name, item number, item color, item count

Each row from sheet 1 is copied to sheet 2 but it gets tricky because rows need to be additionally duplicated based on presence of a size. And that size need to be appended to the item name.
item name column e.g.
name1
name1 | size | Large
name1 | size | X-Large

Additionally the size columns are totaled

TIA
I manually made a file with sheet1 being a basic sample of what i have and sheet 2 being the required formatting. Please see attached test xlsx