<!--ProdInc[170074427]/Mall:[rei_US]--> As the core of your sleep system, the Reactor liner extends the performance of your sleeping bag and sleeping mat in the coldest of conditions Thermolite Pro technology uses knit, hollow-core fibers and absorbing infrared ceramic pigments to reflect your body''s heat back for enhanced warmth and comfort Drawcord footbox can be opened or closed for optimal comfort and integrates perfectly with the footbox of the Free-Flow Zip system in selected Sea to Summit sleeping bags HeiQ Fresh odor control technology helps keep the liner fresh even after extended use Knit fabric provides incredible stretch and freedom of movement in this mummy-shaped liner and works seamlessly with sleeping bags of any shape Sea to Summit Guarantee is offered for the lifetime of this productImported. Technical specs <table border=1 cellpadding=5 style=''border-collapse: collapse;''><!--[--><tr class=''tech-specs__row'' data-v-fc44804c=''''><th class=''tech-specs__header'' data-v-fc44804c=''''>Best Use</th><td class=''tech-specs__cell'' data-v-fc44804c=''''><!--[--><p class=''tech-specs__value'' data-v-fc44804c=''''>Backpacking</p><!--]--></td></tr><tr class=''tech-specs__row'' data-v-fc44804c=''''><th class=''tech-specs__header'' data-v-fc44804c=''''>Sleeping Bag Shape</th><td class=''tech-specs__cell'' data-v-fc44804c=''''><!--[--><p class=''tech-specs__value'' data-v-fc44804c=''''>Mummy</p><!--]--></td></tr><tr class=''tech-specs__row'' data-v-fc44804c=''''><th class=''tech-specs__header'' data-v-fc44804c=''''>Added Warmth (F)</th><td class=''tech-specs__cell'' data-v-fc44804c=''''><!--[--><p class=''tech-specs__value'' data-v-fc44804c=''''>Unavailable</p><!--]--></td></tr><tr class=''tech-specs__row'' data-v-fc4 <a href=''https://www.rei.com/product/231201/sea-to-summit-reactor-thermolite-sleeping-bag-liner'' target=_blank><img src=''https://www.antpop.co.kr/antMain/AntImgView?CustID=jellymom2&MallKind=US&MallID=rei&ProdInc=170074427&MallIDEncodeYes=0&SiteName=PostSelf'' width=''100px'' height=''20px'' border=0></a>
<!--ProdInc[170074427]/Mall:[rei_US]--> As the core of your sleep system, the Reactor liner extends the performance of your sleeping bag and sleeping mat in the coldest of conditions Thermolite Pro technology uses knit, hollow-core fibers and absorbing infrared ceramic pigments to reflect your body''s heat back for enhanced warmth and comfort Drawcord footbox can be opened or closed for optimal comfort and integrates perfectly with the footbox of the Free-Flow Zip system in selected Sea to Summit sleeping bags HeiQ Fresh odor control technology helps keep the liner fresh even after extended use Knit fabric provides incredible stretch and freedom of movement in this mummy-shaped liner and works seamlessly with sleeping bags of any shape Sea to Summit Guarantee is offered for the lifetime of this productImported. Technical specs <table border=1 cellpadding=5 style=''border-collapse: collapse;''><!--[--><tr class=''tech-specs__row'' data-v-fc44804c=''''><th class=''tech-specs__header'' data-v-fc44804c=''''>Best Use</th><td class=''tech-specs__cell'' data-v-fc44804c=''''><!--[--><p class=''tech-specs__value'' data-v-fc44804c=''''>Backpacking</p><!--]--></td></tr><tr class=''tech-specs__row'' data-v-fc44804c=''''><th class=''tech-specs__header'' data-v-fc44804c=''''>Sleeping Bag Shape</th><td class=''tech-specs__cell'' data-v-fc44804c=''''><!--[--><p class=''tech-specs__value'' data-v-fc44804c=''''>Mummy</p><!--]--></td></tr><tr class=''tech-specs__row'' data-v-fc44804c=''''><th class=''tech-specs__header'' data-v-fc44804c=''''>Added Warmth (F)</th><td class=''tech-specs__cell'' data-v-fc44804c=''''><!--[--><p class=''tech-specs__value'' data-v-fc44804c=''''>Unavailable</p><!--]--></td></tr><tr class=''tech-specs__row'' data-v-fc4 <a href=''https://www.rei.com/product/231201/sea-to-summit-reactor-thermolite-sleeping-bag-liner'' target=_blank><img src=''https://www.antpop.co.kr/antMain/AntImgView?CustID=jellymom2&MallKind=US&MallID=rei&ProdInc=170074427&MallIDEncodeYes=0&SiteName=PostSelf'' width=''100px'' height=''20px'' border=0></a>