Tycho is available in Green or Red, Zeta in Orange or Red. The Zeta is capable of taking a "D" sized oxygen cylinder. Both rucksacks feature a full length zip, enabling them to be opened fully, for ease of access and showing contents at a glance.

Zeta

• Length(open) 520 (1100)mm
• Width(open) 370 (370)mm
• Depth(open) 280 (160)mm
• Capacity 62 litres