Ultra strong high tensile fabric with tough fibreglass structure. Silent & smooth 4 wheel spinner. 10 year warranty. Small size 56cm (22"e;), weight 1.6kg, capacity 37L. Medium size 71cm (28"e;), weight 1.98kg, capacity 63L. Large size 81cm (3134;"e;), weight 2.2kg, capacity 92L. Delivery cost £5.