Green tinted biodegradable spiral guards, for protection against damage by field mice, voles and rabbits. Easy to fit, and essential if there are rabbits nearby - if they strip the bark around the circumference of the main stem, there is a very good chance your new tree will perish. Oh, and please put a guard on as soon as you have planted your tree. Don't be tempted to leave it until tomorrow - every year we get calls from customers whose new orchard has been ravaged the same night it was planted! We are pleased to offer these spirals made from 100% biodegradable materials. They undergo a two stage degradation process, with an expected life span of around 4 -5 years, before eventually they can be composted.