Sealing Clips Made From A Strong & Durable Plastic Will Ensure An Air & Water Tight Seal For Use Within The Greenhouse & Home. Great For Keeping Your Seeds Dry, Stopping Open Fertiliser Bags Becoming Damp Or Even Keeping Your Sandwiches Nice & Fresh.please Note That We Cannot Guarentee Which Colour You Will Recieve (blue Or White) But We Will Ensure Your Clips Are All Of The Same Colour.pack Of 2 Large Or Pack Of 4 Smalllarge Measures Approx 24cm Long X 3.7cm Widesmall Measures Approx 12cm Long X 2cm Widemade From A Durable Plastic