Durable polycarbonate construction with a rugged stainless steel clasp provides safe storage and transport for 3x1" (25x75mm) slides. The cryo slide box provides a 100 or 25-place capacity with uniform grooved slide slots to separate and prevent contact. A permanent identification sheet is included in the hinged lid that corresponds to numbering on the temperature-resistant foam lining in the base. These features provide ideal inventory maintenance ability. The boxes are stackable. Store in ultra-low temperatures down to -80°C with confidence.