Backcountry ski gear needs to be durable and fit for purpose.
The following gear is recommended for ski touring and backcountry trips:
Backcountry boots and bindings - the major choice for is Free Heel (Telemark) or Alpine Touring setups.
Ski skins and ski crampons - for climbing slopes
Helmet - with adjustable ventilation. Check your goggles fit it.
Poles - with self arrest grip(s) if steep slopes will be skied
Avalanche kit - avalanche transceiver, snow shovel and avalanche probes
Pack - 20-30 litres is a good size for day trips. A tool compartment for probe and shovel, googles pocket and ski attachments are very handy.
Clothing - outer waterproof shell layer (jacket and pants) and multiple inner layers to regulate warmth
Gloves - warm pair for cold conditions and lighter pair for warmer conditions
Googles - magnetic interchangeable lenses are very handy
Sunglasses - snow rated
Headlamp - suitable for skiing at night
Ski straps - good for securing skis on packs, can be used for emergency repairs
Whistle - pea-less and loud
Navigation equipment - map, compass, GPS
Sun protection - sunscreen and lip balm
First aid kit - lightweight
Water bottle or bladder - drink tubes should be insulated to prevent freezing
Lighter or waterproof matches
Food - meals and high energy snacks
Mobile phone - keep the battery charged [more information]. A small powerbank is good to have too.
GPS and maps for navigation
Emergency shelter - bothy shelter, bivvy sac, lightweight tarp or emergency blanket
Repair tools - multi-tool or knife, duct tape, compact Pozidriv screw driver
Personal locator beacon - for remote area trips with limited or no mobile reception [more information]
Binoculars - a light pair is handy for spotting people and terrain in the distance
Insulated sitting pad - handy for stops and emergency shelters
Smart watch - can be used to assist navigation, check altitude, track progress etc.