Advice on grobags

Claire

So I want to use a grobag for my 5 month old.

We currently have 2.5 tog ones which I believe indicate to use when temperatures are below 18 degrees c and without a sleepsuit/baby grow on.

Our room currently wavers between 18-20 degrees (ish). So wereunsure if it’s safe to use this tog?

Also feels too chilly to be putting her in just a vest inside the grobag, no???

Advice please