Le Parfait storage jars come in 3 handy sizes: 1l, 2l and 3l.
They come standard with a bright orange plastic lid. This lid is airtight and ideal for preserves that don't need heat treament, eg pickling, fermenting and just plain dry storage.
If you want to heat process them they are made of the same tempered glass as the Familia Wiss jars and you just need to buy the matching 2 piece lid to suit.
Note that whilst you can use the corresponding 100mm or 110mm lid on these jars, the orange lid will not fit on jars in the Familia Wiss range.