Our custom 1L Soft Silicone Straws (Set of Three) have been designed especially for your 1L bkrs and fit into ou bkr 1L Straw Cap. To use, just screw the Straw Cap onto the bottle, then insert the straw through the clear silicone valve. The straws come in a package of three and are available in 250ml, 500ml, and 1L, just the right size for each bkr. They aren’t too narrow or too wide, they’re angled for easy sipping, and like everything we make they’re super cute and dishwasher safe.