Vacuum flask Sigg IBT Obsidian 1.1 L — stainless steel, black, Ø 8.7 cm, H 293 mm

The Sigg IBT Obsidian vacuum flask (1.1 L) is a double-walled stainless steel bottle designed for outdoor activities and daily use. With a black finish, compact dimensions (Ø 8.7 cm, H 293 mm) and a weight of 464 g, it offers vacuum insulation to keep drinks hot or cold for hours. The cap doubles as a cup and the bottle is made from 18/8 stainless steel with an internal copper coating for improved thermal performance.

Advantages

The Obsidian bottle features double-walled 18/8 stainless steel construction with a vacuum gap and copper-coated interior, providing high-level insulation. An ultra-thin spun inner body reduces weight by about 30% compared with standard bottles of the same capacity, while high-precision welding minimises the vacuum gap to keep overall bottle size compact. Embossed grooves increase structural strength and resistance to deformation. The cap can be used as a cup, and the product is BPA-free.

Suitable for

• Hiking and day trips
• Mountain biking and cycling
• Canoeing and other water-based activities
• Commuting and work
• Outdoor sports and travel

Key specifications

• Brand: Sigg
• Model: IBT Obsidian
• Capacity: 1.1 L
• Material: Double-walled 18/8 stainless steel, copper-coated interior
• Finish: Black (Obsidian)
• Dimensions: Ø 8.7 cm × H 293 mm
• Weight: 464 g
• MPN: SI GEM110 IBT BK
• EAN: 7610465873601
• BPA-free

How to use

Fill the flask with a hot or cold beverage, screw the cap on securely and, when needed, unscrew the cap and use it as a cup. Preheating or precooling the bottle with hot or cold water for a few minutes before filling can improve temperature retention. Close the cap tightly after each use to maintain vacuum performance and prevent spills.

Recommendations

Do not place the flask in a microwave or on direct heat. Hand wash recommended for long-term performance; check the lid components for cleaning instructions. Avoid filling with carbonated drinks to prevent pressure build-up.