Tog24 hydrogen tcz lite 18l daypack a technical daypack the hydrogen features an 18l capacity and is manufactured in light but durable tcz lite ripstop fabric deatils include a dwr finish for rain repellency a zipped main compartment hydration sleeve and mesh helmet holder the hydrogen includes a removable key ring and features reflective trim padded air mesh back and a hip belt a great choice for your next adventure in the great outdoors ideal for walking and hiking tcz lite ripstop