The bottles are very compact and aren’t too bulky so should fit in standard backpack side pockets and standard bike racks or cages. The 75cl eco active bottles are 24cm high and 7.1cm wide at the base. Weighing only 138g (empty with dry filter). Our new 1 litre bottles are 27.5cm high and 7.9cm wide at the base, weighing 185g (empty with dry filter).