Witz Keep it safe cases are made of strong, durable ABS plastic* to protect against crushing and impact. All cases are equipped with a waterproof rubber o-ring to keep contents dry and safe from the elements. Witz Sport Cases are the most practical waterproof cases to protect your valuables. Witz takes pride in the fact that all of their cases are compact, lightweight, waterproof, portable and convenient. Unlike other protective cases, Witz Sport Cases work for everyday use. Their streamlined design makes them perfect for hanging around necks, slipping into pockets, stowing in backpacks, or clipping to bags. Ever Get your River pass wet? This dry box will keep your small stuff dry and readable! Roomy Personal Storage Case for personal items. Size: 2.7" Wide x 4.3" High x 1.3" Deep. Manufacture does not give inside dimensions.