UltrAspire Synaptic 3.0 Waist Pack

• Single-bottle hydration design: combines a dedicated rear bottle holster with storage for nutrition, a phone and other essentials in one waist pack.
• Mechanical-locking bottle holster: secures the included UltraFlask 550 close to the body while allowing smooth removal and return.
• Right-handed bottle access: rear holster is angled for access with the right hand while running.
• UltraFlask 550 Hybrid Bottle included: provides 550ml of hydration in a flexible, semi-structured bottle.
• Conical ErgoFit shape: tapers upwards to help stabilise the load around the waist or hips.
• Dual-sided belt adjustment: allows the fit to be balanced from both sides.
• Large front 4-way stretch pocket: accommodates a large phone, nutrition or other frequently used items without adding unnecessary bulk.
• Zipped side pocket: provides secure storage for valuables such as keys or cards.
• Quick-stash storage: offers rapid-access space beside the bottle holster for nutrition, wrappers or other small items.
• Front shock cords: allow attachment of folded Z-poles or a lightweight jacket.
• Breathable non-slip webbing: helps manage moisture while reducing unwanted belt movement.
• Aluminium buckle: designed for secure closure and straightforward attachment and removal.
• On-body access: storage areas can be reached without removing the belt.

The Synaptic 3.0 uses dual-sided adjustment so the belt can be tightened evenly and positioned around the waist or hips. Its conical shape is designed to sit securely while keeping the bottle and storage close to the body.

Not sure which running waist pack or belt suits you? See our Running Waist Packs & Belts Guide for advice on carrying capacity, hydration, bottle access, fit, reducing bounce and combining a waist belt with a handheld or race vest.

For differences within the UltrAspire range, see our UltrAspire Waist Packs & Belts Guide.

If you are unsure whether the Synaptic 3.0 is suitable for what you need, get in touch for straightforward advice.