For choosing between the Trail vest and the Lite vest, the key factors are the distance, the amount of gear needed, and personal preference for packing style.

Trail Vest

• Best for long distances, rugged adventures, ultras, or anytime extra gear is needed—like spare clothing, full mandatory kit, or hiking supplies.
  
• Suitable for those who like to pack heavy or want flexibility for changing weather conditions, emergencies, or self-supported outings.
  
• 8L rear storage provides ample capacity for food, hydration, layers, first aid, and other essentials for longer or unsupported runs and hikes.
  

Lite Vest

• Ideal for races and runs in the 5k to marathon distance, or for anyone packing light and focusing on speed.
  
• Works well in ultras or hikes if only a few essentials are required, or for those who value a minimalist, lightweight feel.
  
• 5L rear storage lets runners carry hydration, nutrition, and a jacket or small essentials without bulk.
  

Summary

Pick the Trail vest for longer adventures or if planning to carry more supplies; choose the Lite vest for shorter distances or whenever traveling light is top priority. Both vests can be used outside their optimal range depending on personal needs and packing style.

The bottles go into the mesh pockets on the front of the vest, where you'll also find elasticated cords to keep them firmly in place.

Yes, in the unlikely event you have any issues with your Trekkrs gear, you are covered by the below guarantees:

Running Vests: 2 year guarantee

Soft Flasks: 1 year guarantee

Elite Soft Flasks:
Feature a wider opening for easier filling and cleaning. Each set includes bite valve lids, straw lids, and cleaning sachets, providing added versatility and convenience.

Soft Flasks with Vest:
Have a narrower opening and come with bite valve lids only. These are straightforward and designed for seamless use with the vest.

Summary:
Both options are designed for easy hydration on the move. The elite soft flasks offer more versatility and extra accessories, while the standard flasks provide reliable, everyday performance. Choose the set that matches your needs for convenience and flexibility.

Yes, by 10%...... only joking. We would love to have the data to say it would! What it will do is stop you faffing about like you may have done with other kit, and maintain a more stable level of hydration during your run/hike.