An important part of summer training ski is walking and bounding. For this you need a specific set of poles - shorter than your normal skiing poles. To find the length of your ski walking poles use the following formula. Pole length = Height in cm x 0.7.
It is not important that these are nordic poles -- they can be any old poles you have lying around. There are advantages to having nordic poles because they have the right "ski-grip" but we see and accept all types of poles at practice - so whatever works for you.
Everyone should bring some sort of water carry system to practices. Q: Can this be a hand held bottle? A: For the first couple of practices, yes. After that - NO. It's really hard to hold both a pole and a water bottle in your hand, and it's impossible to do effective training with it. The skiers "drinking belt" is the most common - but camelback, hydration vest or running vests - anything works as long as you can have poles in your hand.
Please bring a small snack to eat after practice. Practice is hard, you will be tired and especially for comp level athletes - there is not that many hours until next one. Refuel !!!
Have running shoes that fit you. Running in skateboard shoes, loafers or bike shoes is definitely possible - but increases your injury risk. You will not be sent home if you don't have the right shoes - it's just unnecessarily risky.
CLOTHES AND BAD WEATHER:
So far SNSC hasn't taken a single "bad weather day" (Olof is from Sweden where 1/2 the year would be "bad weather days" if we followed the US standard). We don't expect us to take one this year either. The only reason to cancel practice is if we put athletes and coaches in outright danger by being outside. Being cold, wet, or hot doesn't qualify as outright danger. Be prepared to fulfill the outlined training session no matter weather - and we live in the mountains, weather changes, often and quickly.
And now we come to the most overwhelming (and fun) subject of them all - Rollerskis. Here is the story.
Devo: You will need classic rollerskis. SNSC has a couple to lend you until you have gotten your own.
Comp: You will need both classic and skate. If you haven't gotten your skis yet, you can borrow SNSC skis, if there are any available after the Devo kids have borrowed.
Helmet !!! - No Helmet - no skiing!!!! As simple as that. Most people use bike helmets.
Poles and ferrules - You can use your winter poles (classic: Height in cm * ~0.84 and skate height in cm * ~0.89) for rollerskiing - but they will need special rollerski ferrules as the asphalt is much harder than snow. Ferrules can be ordered from many places (BNS here: https://www.bouldernordicsport.com/shop/p-165-v2-roller-ferrules.aspx) and SNSC will also have a couple for replacement (for $20) for those who haven't gotten their own.
Heads up - Ferrules will break - especially when you learn to rollerski (as you hit the tip of your pole with the ski).
A great video on how you prepare your poles for summer: