Looking for dildo recommendations

My partner and I are looking to add a dildo to our play. She enjoys my size (16 length, 14cm girth) but we would want to try something slightly bigger (in length and girth) for her. Can anyone is kind to help to find one cause I am new to these and I can’t visualize perfectly the girth of the toy and I don’t wanna mess up for buying a slim one or one that she cannot take. Thank u in advance