- 100% Cotton - Round Neckline - Frill Sleeve - Press Stud Closure At Back - Elasticated Waistband Bloomer - Gift Set The Casa De Fieras Babies' Frill Sleeve Top And Bloomer Set has been designed by our in-house artisans. Imagined in an exclusive limited edition print, our babies' bloomer set is adorned with delicate frill detail for playful finishings, as an elasticated waist and press-stud closure offers effortless functionality.