Store › Caribbean Blue Twisty Sipper Image 1 of 3 Image 2 of 3 Image 3 of 3 Caribbean Blue Twisty Sipper $30.00 2” tall, 2.75” cup diameterSoda-fired porcelain with glaze. Fired to cone 11 and slow cooled. Add To Cart Added! 2” tall, 2.75” cup diameterSoda-fired porcelain with glaze. Fired to cone 11 and slow cooled.