Trygger Camera Case for iPhone 4/4S - Azalea, with Polarizer Filter Polarizing Filter: The polarizing filter cuts out glare and unwanted reflections, without blocking your flash. Each of your snapshots will be crisp, clean and ready to show off Sliding Back: There are no pieces to carry with you and attach. Just slide the back up and you're ready. You'll be the quickest shot around. More Vibrant Colors: The adjustable filter also lets you capture more vibrant colors that are truer to what your eyes see. The world through your phone has never looked this good. Adjust to Compose: The filter is adjustable so you can change the level of light that comes through. You'll have more control over the look of your photos, as you shoot them. Low Profile Protection: 1.8mm of high-strength polycarbonate means your iPhone can be fully protected and keep its thin profile. Think of it as peace of mind for when you climb that tree to get the perfect angle