4pc Filter Kit For GoPro Hero 3 Large Dive case. Filters come w/ Soft Case. Red, Purple, Pink and Gray Colors. Scuba Green Water, Scuba Tropical Water, ND & Warming Filters & an eCostConnection Microfiber Cloth Filters are crafted out of a high optical grade acrylic for maximum sharpness. Filters snap on and off easily from your GoPro Hero3 Scuba Housing case Scuba tropical filter dramatically improves underwater colors. Green Color Water Correction filter improves the color of green water to give your subject a rich, natural tone. Warming filter changes color temperature. Neutral density filter will slow down cameras shutter speed allowing you to creatively blur select moving subjects. Small carrying case included.